diff --git a/src/app/Console/Commands/TranslateShortDescriptionJapanese.php b/src/app/Console/Commands/TranslateShortDescriptionJapanese.php
index e63eadf..bf97350 100644
--- a/src/app/Console/Commands/TranslateShortDescriptionJapanese.php
+++ b/src/app/Console/Commands/TranslateShortDescriptionJapanese.php
@@ -15,7 +15,8 @@ class TranslateShortDescriptionJapanese extends Command
      */
     protected $signature = 'world-heritage:translate-short-description-japanese
                         {--force : Allow execution outside local environment}
-                        {--dry-run : Skip DB writes and API calls}';
+                        {--dry-run : Skip DB writes and API calls}
+                        {--from-json : Use translation JSON instead of calling API}';
 
     /**
      * The console command description.
@@ -46,6 +47,23 @@ public function handle(): int
         $total    = count($sites);
         $this->info("Total sites: {$total}");
 
+        $fromJson = (bool) $this->option('from-json');
+
+        // Load translation map from JSON if --from-json is specified
+        $translationMap = [];
+        if ($fromJson) {
+            $translationPath = storage_path('app/private/unesco/world_heritage_sites_translation.json');
+            if (!file_exists($translationPath)) {
+                $this->error("Translation JSON not found: {$translationPath}");
+                return 1;
+            }
+            $translationData = json_decode(file_get_contents($translationPath), true);
+            foreach ($translationData['results'] as $item) {
+                $translationMap[$item['id_no']] = $item;
+            }
+            $this->info("Loaded translation JSON: " . count($translationMap) . " records");
+        }
+
         $bar = $this->output->createProgressBar($total);
         $bar->start();
 
@@ -59,11 +77,9 @@ public function handle(): int
                 continue;
             }
 
-            // DBに翻訳済みのものがあればそこから取得してJSONに反映
-            // if translated columns are existed in DB, fetching from there and reflected on Json File
+            // If already translated in DB, fetch from there and reflect on JSON file
             $record = WorldHeritageDescription::where('world_heritage_site_id', $idNo)
                 ->whereNotNull('short_description_ja')
-                ->whereNotNull('description_ja')
                 ->first();
 
             if ($record) {
@@ -73,12 +89,44 @@ public function handle(): int
                 continue;
             }
 
+            // If --from-json is specified, use translation JSON instead of calling API
+            if ($fromJson) {
+                $translated = $translationMap[$idNo] ?? null;
+                if (!$translated) {
+                    $this->newLine();
+                    $this->warn("No translation found in JSON for id_no={$idNo}, skipping.");
+                    $bar->advance();
+                    continue;
+                }
+
+                $shortDescriptionJa = $translated['short_description_ja'] ?? null;
+                $descriptionJa      = $translated['description_ja'] ?? null;
+
+                if (!$this->option('dry-run')) {
+                    WorldHeritageDescription::updateOrCreate(
+                        ['world_heritage_site_id' => $idNo],
+                        [
+                            'short_description_en' => $shortDescriptionEn,
+                            'short_description_ja' => $shortDescriptionJa,
+                            'description_en'       => $descriptionEn,
+                            'description_ja'       => $descriptionJa,
+                        ]
+                    );
+                }
+
+                $sites[$index]['short_description_ja'] = $shortDescriptionJa;
+                $sites[$index]['description_ja']       = $descriptionJa;
+                $bar->advance();
+                continue;
+            }
+
             if ($this->option('dry-run')) {
                 $this->line("  [dry-run] Would translate id_no={$idNo}: " . mb_substr($shortDescriptionEn, 0, 50) . '...');
                 $bar->advance();
                 continue;
             }
 
+            // Call Google Translate API
             $texts  = $shortDescriptionEn === $descriptionEn
                 ? [$shortDescriptionEn]
                 : [$shortDescriptionEn, $descriptionEn];
@@ -123,8 +171,9 @@ public function handle(): int
         $bar->finish();
         $this->newLine();
 
+        // Write translation results back to JSON as a backup
         if (!$this->option('dry-run')) {
-            $outputDir  = storage_path('app/private/unesco/normalized');
+            $outputDir  = storage_path('app/private/unesco');
             $outputPath = $outputDir . '/world_heritage_sites_translation.json';
 
             if (!is_dir($outputDir)) {
diff --git a/src/app/Console/Commands/WorldHeritageBuild.php b/src/app/Console/Commands/WorldHeritageBuild.php
index 0c424da..5c23ace 100644
--- a/src/app/Console/Commands/WorldHeritageBuild.php
+++ b/src/app/Console/Commands/WorldHeritageBuild.php
@@ -33,7 +33,9 @@ class WorldHeritageBuild extends Command
         {--jp-missing-limit=200 : Max missing ids to print to console}
 
         {--algolia : Also import records into Algolia}
-        {--algolia-truncate : Clear Algolia index before import}';
+        {--algolia-truncate : Clear Algolia index before import}
+
+        {--translate-jp-from-json : Use translation JSON for Japanese translation}';
 
     protected $description = 'Rebuild local DB and import UNESCO World Heritage data (dump -> split -> import)';
 
@@ -105,8 +107,9 @@ public function handle(): int
 
         if ((bool) $this->option('translate-jp')) {
             $this->callOrFail('world-heritage:translate-short-description-japanese', array_filter([
-                '--force' => true,
-                '--dry-run' => (bool) $this->option('translate-jp-dry-run') ? true : null,
+                '--force'     => true,
+                '--dry-run'   => (bool) $this->option('translate-jp-dry-run') ? true : null,
+                '--from-json' => (bool) $this->option('translate-jp-from-json') ? true : null,
             ], static fn ($v) => $v !== null));
         }
 
diff --git a/src/app/Models/WorldHeritage.php b/src/app/Models/WorldHeritage.php
index fba6777..d39580d 100644
--- a/src/app/Models/WorldHeritage.php
+++ b/src/app/Models/WorldHeritage.php
@@ -5,7 +5,7 @@
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\Relations\BelongsToMany;
 use Illuminate\Database\Eloquent\Relations\HasMany;
-use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\Relations\HasOne;
 use Illuminate\Database\Eloquent\SoftDeletes;
 
 class WorldHeritage extends Model
@@ -60,9 +60,9 @@ public function images(): HasMany
             ->orderBy('sort_order', 'asc');
     }
 
-    public function descriptions(): HasMany
+    public function descriptions(): HasOne
     {
-        return $this->hasMany(WorldHeritageDescription::class, 'world_heritage_site_id', 'id');
+        return $this->hasOne(WorldHeritageDescription::class, 'world_heritage_site_id', 'id');
     }
 
     protected function casts(): array
diff --git a/src/app/Models/WorldHeritageDescription.php b/src/app/Models/WorldHeritageDescription.php
index 81b82ab..a747dcd 100644
--- a/src/app/Models/WorldHeritageDescription.php
+++ b/src/app/Models/WorldHeritageDescription.php
@@ -26,7 +26,7 @@ class WorldHeritageDescription extends Model
         'updated_at',
     ];
 
-    public function worldHeritageSite(): BelongsTo
+    public function heritageSite(): BelongsTo
     {
         return $this->belongsTo(WorldHeritage::class, 'world_heritage_site_id', 'id');
     }
diff --git a/src/app/Packages/Domains/Test/QueryService/WorldHeritageQueryService_getAllHeritagesTest.php b/src/app/Packages/Domains/Test/QueryService/WorldHeritageQueryService_getAllHeritagesTest.php
index fe2878e..edea257 100644
--- a/src/app/Packages/Domains/Test/QueryService/WorldHeritageQueryService_getAllHeritagesTest.php
+++ b/src/app/Packages/Domains/Test/QueryService/WorldHeritageQueryService_getAllHeritagesTest.php
@@ -6,6 +6,7 @@
 use App\Models\Country;
 use App\Models\Image;
 use App\Models\WorldHeritage;
+use App\Models\WorldHeritageDescription;
 use Database\Seeders\DatabaseSeeder;
 use Illuminate\Support\Facades\DB;
 use Tests\TestCase;
@@ -57,6 +58,7 @@ private function refresh(): void
             Country::truncate();
             DB::table('site_state_parties')->truncate();
             Image::truncate();
+            WorldHeritageDescription::truncate();
             DB::connection('mysql')->statement('SET FOREIGN_KEY_CHECKS=1;');
         }
     }
diff --git a/src/app/Packages/Domains/Test/QueryService/WorldHeritageQueryService_getByIdTest.php b/src/app/Packages/Domains/Test/QueryService/WorldHeritageQueryService_getByIdTest.php
index e596def..13dbeca 100644
--- a/src/app/Packages/Domains/Test/QueryService/WorldHeritageQueryService_getByIdTest.php
+++ b/src/app/Packages/Domains/Test/QueryService/WorldHeritageQueryService_getByIdTest.php
@@ -4,6 +4,7 @@
 
 use App\Models\Country;
 use App\Models\WorldHeritage;
+use App\Models\WorldHeritageDescription;
 use App\Packages\Domains\Ports\Dto\HeritageSearchResult;
 use App\Packages\Domains\Ports\WorldHeritageSearchPort;
 use App\Packages\Domains\WorldHeritageQueryService;
@@ -48,6 +49,7 @@ private function refresh(): void
             WorldHeritage::truncate();
             Country::truncate();
             Image::truncate();
+            WorldHeritageDescription::truncate();
             DB::table('site_state_parties')->truncate();
             DB::connection('mysql')->statement('SET FOREIGN_KEY_CHECKS=1;');
         }
@@ -72,6 +74,7 @@ private function arrayData(): array
             'latitude' => 0.0,
             'longitude' => 0.0,
             'short_description' => '氷期後のブナの自然拡散史を示すヨーロッパ各地の原生的ブナ林群から成る越境・連続資産。',
+            'short_description_jp' => 'あいうえお',
             'unesco_site_url' => 'https://whc.unesco.org/en/list/1133',
             'state_parties_codes' => [
                 'ALB','AUT','BEL','BIH','BGR','HRV','CZE','FRA','DEU','ITA','MKD','POL','ROU','SVK','SVN','ESP','CHE','UKR'
@@ -157,6 +160,7 @@ public function test_check_data_value(): void
         $this->assertEquals($this->arrayData()['latitude'], $result->getLatitude());
         $this->assertEquals($this->arrayData()['longitude'], $result->getLongitude());
         $this->assertEquals($this->arrayData()['short_description'], $result->getShortDescription());
+        $this->assertEquals($this->arrayData()['short_description_jp'], $result->getShortDescriptionJp());
         $this->assertEquals($this->arrayData()['unesco_site_url'], $result->getUnescoSiteUrl());
         $this->assertEquals($expectedCodes, $result->getStatePartyCodes());
         $this->assertEquals($orderedExpected, $result->getStatePartiesMeta());
diff --git a/src/app/Packages/Domains/Test/QueryService/WorldHeritageQueryService_searchHeritagesTest.php b/src/app/Packages/Domains/Test/QueryService/WorldHeritageQueryService_searchHeritagesTest.php
index 6f60253..957c4d7 100644
--- a/src/app/Packages/Domains/Test/QueryService/WorldHeritageQueryService_searchHeritagesTest.php
+++ b/src/app/Packages/Domains/Test/QueryService/WorldHeritageQueryService_searchHeritagesTest.php
@@ -16,6 +16,7 @@
 use Mockery;
 use Tests\TestCase;
 use Illuminate\Support\Collection;
+use App\Models\WorldHeritageDescription;
 
 final class WorldHeritageQueryService_searchHeritagesTest extends TestCase
 {
@@ -81,6 +82,7 @@ private function refresh(): void
             Country::truncate();
             DB::table('site_state_parties')->truncate();
             Image::truncate();
+            WorldHeritageDescription::truncate();
             DB::connection('mysql')->statement('SET FOREIGN_KEY_CHECKS=1;');
         }
     }
diff --git a/src/app/Packages/Domains/Test/QueryService/WorldHeritageReadQueryService_findTest.php b/src/app/Packages/Domains/Test/QueryService/WorldHeritageReadQueryService_findTest.php
index 8430de2..da25f18 100644
--- a/src/app/Packages/Domains/Test/QueryService/WorldHeritageReadQueryService_findTest.php
+++ b/src/app/Packages/Domains/Test/QueryService/WorldHeritageReadQueryService_findTest.php
@@ -4,6 +4,7 @@
 
 use App\Models\Country;
 use App\Models\Image;
+use App\Models\WorldHeritageDescription;
 use App\Packages\Domains\WorldHeritageReadQueryService;
 use App\Models\WorldHeritage;
 use Database\Seeders\DatabaseSeeder;
@@ -39,6 +40,7 @@ private function refresh(): void
             Country::truncate();
             DB::table('site_state_parties')->truncate();
             Image::truncate();
+            WorldHeritageDescription::truncate();
             DB::connection('mysql')->statement('SET FOREIGN_KEY_CHECKS=1;');
         }
     }
diff --git a/src/app/Packages/Domains/Test/WorldHeritageEntityCollectionTest.php b/src/app/Packages/Domains/Test/WorldHeritageEntityCollectionTest.php
index 0b68b90..48d7a65 100644
--- a/src/app/Packages/Domains/Test/WorldHeritageEntityCollectionTest.php
+++ b/src/app/Packages/Domains/Test/WorldHeritageEntityCollectionTest.php
@@ -5,6 +5,7 @@
 use App\Models\Country;
 use App\Models\Image;
 use App\Models\WorldHeritage;
+use App\Models\WorldHeritageDescription;
 use App\Packages\Domains\WorldHeritageEntityCollection;
 use Database\Seeders\DatabaseSeeder;
 use Illuminate\Support\Facades\DB;
@@ -34,6 +35,7 @@ private function refresh(): void
             WorldHeritage::truncate();
             Country::truncate();
             Image::truncate();
+            WorldHeritageDescription::truncate();
             DB::table('site_state_parties')->truncate();
             DB::connection('mysql')->statement('SET FOREIGN_KEY_CHECKS=1;');
         }
@@ -63,6 +65,7 @@ private function arraySingleData(): array
                 'latitude' => 34.6851,
                 'longitude' => 135.8048,
                 'short_description' => 'Temples and shrines of the first permanent capital of Japan.',
+                'short_description_jp' => 'あいうえお',
                 'image_url' => '',
                 'unesco_site_url' => 'https://whc.unesco.org/en/list/668/',
             ],
@@ -89,6 +92,7 @@ private function arrayMultiData(): array
                 'latitude' => 0.0,
                 'longitude' => 0.0,
                 'short_description' => 'Transnational serial property of European beech forests illustrating post-glacial expansion and ecological processes across Europe.',
+                'short_description_jp' => 'あいうえお',
                 'image_url' => '',
                 'unesco_site_url' => 'https://whc.unesco.org/en/list/1133/',
                 'state_parties' => [
@@ -132,6 +136,7 @@ private function arrayMultiData(): array
                 'latitude' => 0.0,
                 'longitude' => 0.0,
                 'short_description' => 'Transnational Silk Road corridor across China, Kazakhstan and Kyrgyzstan illustrating exchange of goods, ideas and beliefs.',
+                'short_description_jp' => 'あいうえお',
                 'image_url' => '',
                 'unesco_site_url' => 'https://whc.unesco.org/en/list/1442/',
                 'state_parties' => ['CHN','KAZ','KGZ'],
@@ -166,6 +171,7 @@ public function test_collection_check_type(): void
                     $data['area_hectares'],
                     $data['buffer_zone_hectares'],
                     $data['short_description'],
+                    $data['short_description_jp'],
                     null,
                     $data['unesco_site_url'],
                     $data['state_parties'] ?? [],
@@ -205,6 +211,7 @@ public function test_collection_check_count_value(): void
                     $data['area_hectares'],
                     $data['buffer_zone_hectares'],
                     $data['short_description'],
+                    $data['short_description_jp'],
                     null,
                     $data['unesco_site_url'],
                     $data['state_parties'] ?? [],
@@ -238,6 +245,7 @@ public function test_multi_collection_check_type(): void
                     $data['area_hectares'],
                     $data['buffer_zone_hectares'],
                     $data['short_description'],
+                    $data['short_description_jp'],
                     null,
                     $data['unesco_site_url'],
                     $data['state_parties'] ?? [],
@@ -271,6 +279,7 @@ public function test_multi_collection_check_count_value(): void
                     $data['area_hectares'],
                     $data['buffer_zone_hectares'],
                     $data['short_description'],
+                    $data['short_description_jp'],
                     null,
                     $data['unesco_site_url'],
                     $data['state_parties'] ?? [],
diff --git a/src/app/Packages/Domains/Test/WorldHeritageEntityTest.php b/src/app/Packages/Domains/Test/WorldHeritageEntityTest.php
index a376b8b..051a28d 100644
--- a/src/app/Packages/Domains/Test/WorldHeritageEntityTest.php
+++ b/src/app/Packages/Domains/Test/WorldHeritageEntityTest.php
@@ -4,6 +4,7 @@
 
 use App\Models\Country;
 use App\Models\WorldHeritage;
+use App\Models\WorldHeritageDescription;
 use Illuminate\Support\Facades\DB;
 use Tests\TestCase;
 use App\Packages\Domains\WorldHeritageEntity;
@@ -31,6 +32,7 @@ private function refresh(): void
             WorldHeritage::truncate();
             Country::truncate();
             DB::table('site_state_parties')->truncate();
+            WorldHeritageDescription::truncate();
             DB::connection('mysql')->statement('SET FOREIGN_KEY_CHECKS=1;');
         }
     }
@@ -54,6 +56,7 @@ private function arraySingleData(): array
             'latitude' => 34.6851,
             'longitude' => 135.8048,
             'short_description' => 'Temples and shrines of the first permanent capital of Japan.',
+            'short_description_jp' => 'これはテストです',
             'image_url' => '',
             'unesco_site_url' => 'https://whc.unesco.org/en/list/668/',
             'state_parties' => null,
@@ -85,6 +88,7 @@ private function arrayMultiData(): array
             'latitude' => 0.0,
             'longitude' => 0.0,
             'short_description' => 'Transnational serial property of European beech forests illustrating post-glacial expansion and ecological processes across Europe.',
+            'short_description_jp' => 'これはテストです',
             'image_url' => '',
             'unesco_site_url' => 'https://whc.unesco.org/en/list/1133/',
             'state_parties' => [
@@ -133,6 +137,7 @@ public function test_entity_check_single_type(): void
             $this->arraySingleData()['area_hectares'],
             $this->arraySingleData()['buffer_zone_hectares'],
             $this->arraySingleData()['short_description'],
+            $this->arraySingleData()['short_description_jp'],
             null, // collection (ImageEntityCollection)
             $this->arraySingleData()['unesco_site_url'],
             $this->arraySingleData()['state_parties'] ?? [],
@@ -162,6 +167,7 @@ public function test_entity_check_single_value(): void
             $this->arraySingleData()['area_hectares'],
             $this->arraySingleData()['buffer_zone_hectares'],
             $this->arraySingleData()['short_description'],
+            $this->arraySingleData()['short_description_jp'],
             null,
             $this->arraySingleData()['unesco_site_url'],
             $this->arraySingleData()['state_parties'] ?: [],
@@ -183,6 +189,7 @@ public function test_entity_check_single_value(): void
         $this->assertEquals($this->arraySingleData()['area_hectares'], $entity->getAreaHectares());
         $this->assertEquals($this->arraySingleData()['buffer_zone_hectares'], $entity->getBufferZoneHectares());
         $this->assertEquals($this->arraySingleData()['short_description'], $entity->getShortDescription());
+        $this->assertEquals($this->arraySingleData()['short_description_jp'], $entity->getShortDescriptionJp());
         $this->assertEquals($this->arraySingleData()['unesco_site_url'], $entity->getUnescoSiteUrl());
         $this->assertSame(['JPN'], $entity->getStatePartyCodes());
         $this->assertSame($this->arraySingleData()['state_parties_meta'], $entity->getStatePartyMeta());
@@ -208,6 +215,7 @@ public function test_entity_check_multi_type(): void
             $this->arrayMultiData()['area_hectares'],
             $this->arrayMultiData()['buffer_zone_hectares'],
             $this->arrayMultiData()['short_description'],
+            $this->arrayMultiData()['short_description_jp'],
             null,
             $this->arrayMultiData()['unesco_site_url'],
             $this->arrayMultiData()['state_parties'] ?? [],
@@ -237,6 +245,7 @@ public function test_entity_check_multi_value(): void
             $this->arrayMultiData()['area_hectares'],
             $this->arrayMultiData()['buffer_zone_hectares'],
             $this->arrayMultiData()['short_description'],
+            $this->arrayMultiData()['short_description_jp'],
             null, // collection
             $this->arrayMultiData()['unesco_site_url'],
             $this->arrayMultiData()['state_parties'] ?? [],
@@ -257,6 +266,7 @@ public function test_entity_check_multi_value(): void
         $this->assertEquals($this->arrayMultiData()['area_hectares'], $entity->getAreaHectares());
         $this->assertEquals($this->arrayMultiData()['buffer_zone_hectares'], $entity->getBufferZoneHectares());
         $this->assertEquals($this->arrayMultiData()['short_description'], $entity->getShortDescription());
+        $this->assertEquals($this->arrayMultiData()['short_description_jp'], $entity->getShortDescriptionJp());
         $this->assertEquals($this->arrayMultiData()['unesco_site_url'], $entity->getUnescoSiteUrl());
         $this->assertEquals($this->arrayMultiData()['state_parties'], $entity->getStatePartyCodes());
         $this->assertEquals($this->arrayMultiData()['state_parties_meta'], $entity->getStatePartyMeta());
diff --git a/src/app/Packages/Domains/WorldHeritageEntity.php b/src/app/Packages/Domains/WorldHeritageEntity.php
index 9fc3c44..d942892 100644
--- a/src/app/Packages/Domains/WorldHeritageEntity.php
+++ b/src/app/Packages/Domains/WorldHeritageEntity.php
@@ -23,6 +23,7 @@ public function __construct(
         public ?float $areaHectares = null,
         public ?float $bufferZoneHectares = null,
         public ?string $shortDescription = null,
+        public ?string $shortDescriptionJp = null,
         public ?ImageEntityCollection $collection = null,
         public ?string $unescoSiteUrl = null,
         private array $statePartyCodes = [],
@@ -109,6 +110,11 @@ public function getShortDescription(): ?string
         return $this->shortDescription;
     }
 
+    public function getShortDescriptionJp(): ?string
+    {
+        return $this->shortDescriptionJp;
+    }
+
     public function getImageCollection(): ?ImageEntityCollection
     {
         return $this->collection;
@@ -139,11 +145,6 @@ public function getStatePartyMeta(): array
         return $this->statePartyMeta;
     }
 
-    public function isTransnational(): bool
-    {
-        return count($this->statePartyCodes) > 1;
-    }
-
     public function getPrimaryStatePartyCode(): ?string
     {
         foreach ($this->statePartyMeta as $code => $meta) {
diff --git a/src/app/Packages/Domains/WorldHeritageQueryService.php b/src/app/Packages/Domains/WorldHeritageQueryService.php
index 936ac34..d2933f2 100644
--- a/src/app/Packages/Domains/WorldHeritageQueryService.php
+++ b/src/app/Packages/Domains/WorldHeritageQueryService.php
@@ -60,6 +60,12 @@ public function getAllHeritages(
                 'images' => static function ($imagesQuery): void {
                     $imagesQuery->where('is_primary', true)->limit(1);
                 },
+                'descriptions' => static function ($descriptionsQuery): void {
+                    $descriptionsQuery->select([
+                        'world_heritage_descriptions.world_heritage_site_id',
+                        'world_heritage_descriptions.short_description_ja',
+                    ]);
+                }
             ])
             ->orderBy('world_heritage_sites.id', $order)
             ->paginate($perPage, page: $currentPage);
@@ -100,6 +106,12 @@ public function getHeritageById(int $id): WorldHeritageDto
                 'images' => static function ($imagesQuery): void {
                     $imagesQuery->orderBy('sort_order', 'asc');
                 },
+                'descriptions' => static function ($descriptionsQuery): void {
+                $descriptionsQuery->select([
+                    'world_heritage_descriptions.world_heritage_site_id',
+                    'world_heritage_descriptions.short_description_ja',
+                ]);
+                }
             ])
             ->findOrFail($id);
 
@@ -184,6 +196,7 @@ public function getHeritageById(int $id): WorldHeritageDto
             'state_party_code' => $statePartyCodes,
             'state_party_codes' => $statePartyCodesCompat,
             'state_parties_meta' => $statePartiesMeta,
+            'short_description_ja' => $heritage->descriptions->short_description_ja,
             'images' => $imageCollection->toArray(),
         ]);
     }
@@ -308,6 +321,7 @@ private function buildWorldHeritagePayload($heritage): array
             'short_description' => $heritage->short_description,
             'image_url' => $heritage->images->first()?->url,
             'unesco_site_url' => $heritage->unesco_site_url,
+            'short_description_jp' => $heritage->descriptions?->short_description_ja,
             'state_parties' => $statePartyCodeList,
             'state_parties_meta' => $statePartiesMeta,
         ];
diff --git a/src/app/Packages/Domains/WorldHeritageReadQueryService.php b/src/app/Packages/Domains/WorldHeritageReadQueryService.php
index c13daf5..4c71fcd 100644
--- a/src/app/Packages/Domains/WorldHeritageReadQueryService.php
+++ b/src/app/Packages/Domains/WorldHeritageReadQueryService.php
@@ -43,6 +43,12 @@ public function findByIdsPreserveOrder(array $ids): Collection
                 'images' => static function ($imageQuery): void {
                     $imageQuery->where('is_primary', true)->limit(1);
                 },
+                'descriptions' => static function ($descriptionQuery): void {
+                    $descriptionQuery->select([
+                        'world_heritage_descriptions.world_heritage_site_id',
+                        'world_heritage_descriptions.short_description_ja',
+                    ]);
+                }
             ])
             ->whereIn('world_heritage_sites.id', $ids)
             ->get()
diff --git a/src/app/Packages/Features/QueryUseCases/Dto/WorldHeritageDto.php b/src/app/Packages/Features/QueryUseCases/Dto/WorldHeritageDto.php
index 7ee0b6b..bfdc8a3 100644
--- a/src/app/Packages/Features/QueryUseCases/Dto/WorldHeritageDto.php
+++ b/src/app/Packages/Features/QueryUseCases/Dto/WorldHeritageDto.php
@@ -24,6 +24,7 @@ public function __construct(
         private readonly ?ImageDtoCollection $images = null,
         private readonly ?ImageDto $imageUrl = null,
         private readonly ?string $unescoSiteUrl = null,
+        private readonly ?string $shortDescriptionJp = null,
         private readonly array $statePartyCodes = [],
         private readonly array $statePartiesMeta = [],
     ){}
@@ -178,6 +179,11 @@ public function getThumbnailUrl(): ?string
         return $this->imageUrl?->getUrl();
     }
 
+    public function getShortDescriptionJp(): ?string
+    {
+        return $this->shortDescriptionJp;
+    }
+
     public function toArray(): array
     {
         $value = [
@@ -198,6 +204,7 @@ public function toArray(): array
             'area_hectares' => $this->getAreaHectares(),
             'buffer_zone_hectares' => $this->getBufferZoneHectares(),
             'short_description' => $this->getShortDescription(),
+            'short_description_jp' => $this->getShortDescriptionJp(),
             'unesco_site_url' => $this->getUnescoSiteUrl(),
             'state_party_codes' => $this->getStatePartyCodes(),
             'state_parties_meta' => $this->getStatePartiesMeta(),
diff --git a/src/app/Packages/Features/QueryUseCases/Dto/WorldHeritageDtoCollection.php b/src/app/Packages/Features/QueryUseCases/Dto/WorldHeritageDtoCollection.php
index b5d511c..0f6ef60 100644
--- a/src/app/Packages/Features/QueryUseCases/Dto/WorldHeritageDtoCollection.php
+++ b/src/app/Packages/Features/QueryUseCases/Dto/WorldHeritageDtoCollection.php
@@ -40,6 +40,7 @@ public function toSummaryArray(): array
                 'area_hectares' => $heritage->getAreaHectares(),
                 'buffer_zone_hectares' => $heritage->getBufferZoneHectares(),
                 'short_description' => $heritage->getShortDescription(),
+                'short_description_jp' => $heritage->getShortDescriptionJp(),
                 'unesco_site_url' => $heritage->getUnescoSiteUrl(),
                 'state_party_codes' => $heritage->getStatePartyCodes(),
                 'state_parties_meta' => $heritage->getStatePartiesMeta(),
diff --git a/src/database/seeders/DatabaseSeeder.php b/src/database/seeders/DatabaseSeeder.php
index cba9d99..3141d7f 100644
--- a/src/database/seeders/DatabaseSeeder.php
+++ b/src/database/seeders/DatabaseSeeder.php
@@ -17,6 +17,7 @@ public function run(): void
             SiteStatePartySeeder::class,
             ImageSeeder::class,
             WorldHeritageThumbnailSeeder::class,
+            WorldHeritageDescriptionSeeder::class,
         ]);
     }
 }
diff --git a/src/database/seeders/WorldHeritageDescriptionSeeder.php b/src/database/seeders/WorldHeritageDescriptionSeeder.php
new file mode 100644
index 0000000..3fcc7f7
--- /dev/null
+++ b/src/database/seeders/WorldHeritageDescriptionSeeder.php
@@ -0,0 +1,39 @@
+<?php
+
+namespace Database\Seeders;
+
+use Illuminate\Database\Console\Seeds\WithoutModelEvents;
+use Illuminate\Database\Seeder;
+use Illuminate\Support\Carbon;
+use Illuminate\Support\Facades\DB;
+use App\Models\WorldHeritage;
+use App\Models\WorldHeritageDescription;
+
+class WorldHeritageDescriptionSeeder extends Seeder
+{
+    /**
+     * Run the database seeds.
+     */
+    public function run(): void
+    {
+        $now = Carbon::now();
+        $sites = WorldHeritage::query()->orderBy('id')->get();
+
+        if ($sites->isEmpty()) {
+            $this->command?->warn('WorldHeritageDescriptionSeeder: world_heritage_sites が空です。先に世界遺産データを投入してください。');
+            return;
+        }
+
+        foreach ($sites as $site) {
+            WorldHeritageDescription::create([
+                'world_heritage_site_id' => $site->id,
+                'short_description_en' => "Short description (EN) for site {$site->id}",
+                'short_description_ja' => "あいうえお",
+                'description_en' => "Description (EN) for site {$site->id}",
+                'description_ja' => null,
+                'created_at' => $now,
+                'updated_at' => $now,
+            ]);
+        }
+    }
+}