src/main/kotlin/kr/co/vividnext/sodalive/v2/content/recommendation/adapter/out/persistence/DefaultAudioRecommendationQueryRepository.kt

@@ -11,6 +11,7 @@ import kr.co.vividnext.sodalive.content.QAudioContent.audioContent
 import kr.co.vividnext.sodalive.content.main.banner.AudioContentBannerType
 import kr.co.vividnext.sodalive.content.main.banner.QAudioContentBanner.audioContentBanner
 import kr.co.vividnext.sodalive.content.theme.QAudioContentTheme.audioContentTheme
+import kr.co.vividnext.sodalive.content.translation.ContentTranslationRepository
 import kr.co.vividnext.sodalive.creator.admin.content.series.QSeries.series
 import kr.co.vividnext.sodalive.creator.admin.content.series.QSeriesContent.seriesContent
 import kr.co.vividnext.sodalive.event.EventItem
@@ -38,6 +39,7 @@ import javax.persistence.EntityManager
 class DefaultAudioRecommendationQueryRepository(
     private val queryFactory: JPAQueryFactory,
     private val entityManager: EntityManager,
+    private val contentTranslationRepository: ContentTranslationRepository,
     @Value("\${cloud.aws.cloud-front.host}")
     private val cloudFrontHost: String
 ) : AudioRecommendationQueryRepository {
@@ -115,32 +117,35 @@ class DefaultAudioRecommendationQueryRepository(
         limit: Int,
         memberId: Long?,
         canViewAdultContent: Boolean,
-        now: LocalDateTime
+        now: LocalDateTime,
+        locale: String
     ): List<AudioCard> {
         val rows = audioRows(memberId, canViewAdultContent, now) {
             orderBy(audioContent.releaseDate.desc(), audioContent.id.desc()).limit(limit.toLong())
         }
-        return rows.toAudioCards(now, canViewAdultContent)
+        return rows.toAudioCards(now, canViewAdultContent, locale)
     }
 
     override fun findFreeAudios(
         limit: Int,
         memberId: Long?,
         canViewAdultContent: Boolean,
-        now: LocalDateTime
+        now: LocalDateTime,
+        locale: String
     ): List<AudioCard> {
         val randomTieBreaker = Expressions.numberTemplate(Double::class.java, "function('rand')")
         val rows = audioRows(memberId, canViewAdultContent, now, audioContent.price.eq(0)) {
             orderBy(randomTieBreaker.asc()).limit(limit.toLong())
         }
-        return rows.toAudioCards(now, canViewAdultContent)
+        return rows.toAudioCards(now, canViewAdultContent, locale)
     }
 
     override fun findPointAudios(
         limit: Int,
         memberId: Long?,
         canViewAdultContent: Boolean,
-        now: LocalDateTime
+        now: LocalDateTime,
+        locale: String
     ): List<AudioCard> {
         val randomTieBreaker = Expressions.numberTemplate(Double::class.java, "function('rand')")
         val rows = audioRows(
@@ -151,25 +156,27 @@ class DefaultAudioRecommendationQueryRepository(
         ) {
             orderBy(randomTieBreaker.asc()).limit(limit.toLong())
         }
-        return rows.toAudioCards(now, canViewAdultContent)
+        return rows.toAudioCards(now, canViewAdultContent, locale)
     }
 
     override fun findAudioCardsByIds(
         contentIds: List<Long>,
         memberId: Long?,
         canViewAdultContent: Boolean,
-        now: LocalDateTime
+        now: LocalDateTime,
+        locale: String
     ): List<AudioCard> {
         if (contentIds.isEmpty()) return emptyList()
         val orderById = contentIds.withIndex().associate { it.value to it.index }
         val rows = audioRows(memberId, canViewAdultContent, now, audioContent.id.`in`(contentIds)) { this }
-        return rows.toAudioCards(now, canViewAdultContent).sortedBy { orderById[it.audioContentId] ?: Int.MAX_VALUE }
+        return rows.toAudioCards(now, canViewAdultContent, locale).sortedBy { orderById[it.audioContentId] ?: Int.MAX_VALUE }
     }
 
     override fun findCommentedAudiosByIds(
         contentIds: List<Long>,
         memberId: Long?,
-        canViewAdultContent: Boolean
+        canViewAdultContent: Boolean,
+        locale: String
     ): List<CommentedAudio> {
         if (contentIds.isEmpty()) return emptyList()
         val contentOrder = contentIds.withIndex().associate { it.value to it.index }
@@ -235,7 +242,7 @@ class DefaultAudioRecommendationQueryRepository(
                     )
               )
         """.trimIndent()
-        return entityManager.createNativeQuery(sql)
+        val commentedAudios = entityManager.createNativeQuery(sql)
             .setParameter("contentIds", contentIds)
             .setParameter("memberId", memberId)
             .setParameter("canViewAdultContent", canViewAdultContent)
@@ -251,6 +258,11 @@ class DefaultAudioRecommendationQueryRepository(
                         ?: "$cloudFrontHost/profile/default-profile.png"
                 )
             }
+        val translatedTitleByContentId = translatedTitles(commentedAudios.map { it.audioContentId }, locale)
+        return commentedAudios
+            .map { audio ->
+                translatedTitleByContentId[audio.audioContentId]?.let { audio.copy(title = it) } ?: audio
+            }
             .sortedBy { contentOrder[it.audioContentId] ?: Int.MAX_VALUE }
     }
 
@@ -455,18 +467,23 @@ class DefaultAudioRecommendationQueryRepository(
             .fetch()
     }
 
-    private fun List<Tuple>.toAudioCards(now: LocalDateTime, canViewAdultContent: Boolean): List<AudioCard> {
+    private fun List<Tuple>.toAudioCards(
+        now: LocalDateTime,
+        canViewAdultContent: Boolean,
+        locale: String
+    ): List<AudioCard> {
         if (isEmpty()) return emptyList()
         val contentIds = map { it.get(audioContent.id)!! }
         val creatorIds = map { it.get(audioContent.member.id)!! }.distinct()
         val firstContentIdByCreatorId = firstAudioContentIds(creatorIds, now, canViewAdultContent)
         val isOriginalSeriesByContentId = originalSeriesFlags(contentIds)
+        val translatedTitleByContentId = translatedTitles(contentIds, locale)
         return map { row ->
             val contentId = row.get(audioContent.id)!!
             val creatorId = row.get(audioContent.member.id)!!
             AudioCard(
                 audioContentId = contentId,
-                title = row.get(audioContent.title)!!,
+                title = translatedTitleByContentId[contentId] ?: row.get(audioContent.title)!!,
                 duration = row.get(audioContent.duration),
                 imageUrl = row.get(audioContent.coverImage).toCdnUrl(cloudFrontHost),
                 price = row.get(audioContent.price)!!,
@@ -479,6 +496,17 @@ class DefaultAudioRecommendationQueryRepository(
         }
     }
 
+    private fun translatedTitles(contentIds: List<Long>, locale: String): Map<Long, String> {
+        if (contentIds.isEmpty()) return emptyMap()
+        return contentTranslationRepository.findByContentIdInAndLocale(contentIds, locale)
+            .mapNotNull { translation ->
+                translation.renderedPayload.title
+                    .takeIf { it.isNotBlank() }
+                    ?.let { translation.contentId to it }
+            }
+            .toMap()
+    }
+
     private fun firstAudioContentIds(
         creatorIds: List<Long>,
         now: LocalDateTime,

src/test/kotlin/kr/co/vividnext/sodalive/v2/api/content/overview/adapter/in/web/ContentOverviewEndToEndTest.kt

@@ -2,6 +2,8 @@ package kr.co.vividnext.sodalive.v2.api.content.overview.adapter.`in`.web
 
 import kr.co.vividnext.sodalive.content.AudioContent
 import kr.co.vividnext.sodalive.content.theme.AudioContentTheme
+import kr.co.vividnext.sodalive.content.translation.ContentTranslation
+import kr.co.vividnext.sodalive.content.translation.ContentTranslationPayload
 import kr.co.vividnext.sodalive.member.Member
 import kr.co.vividnext.sodalive.member.MemberAdapter
 import kr.co.vividnext.sodalive.member.MemberRole
@@ -93,6 +95,44 @@ class ContentOverviewEndToEndTest @Autowired constructor(
             .andExpect(jsonPath("$.data.hasNext").value(false))
     }
 
+    @Test
+    @DisplayName("콘텐츠 전체보기 New & Hot은 같은 요청에서 en-ja-en 제목 번역을 격리한다")
+    fun shouldIsolateRequestedLocaleTitlesForNewAndHotAudioOverview() {
+        val fixture = createNewAndHotFixture("content-overview-new-hot")
+        saveContentTranslation(fixture.audioContentId, "en", "content-overview-new-hot-en-translated")
+        saveContentTranslation(fixture.audioContentId, "ja", "content-overview-new-hot-ja-translated")
+
+        expectOverviewTitle(fixture, "NEW_AND_HOT_AUDIO", "en", "content-overview-new-hot-en-translated")
+        expectOverviewTitle(fixture, "NEW_AND_HOT_AUDIO", "ja", "content-overview-new-hot-ja-translated")
+        expectOverviewTitle(fixture, "NEW_AND_HOT_AUDIO", "en", "content-overview-new-hot-en-translated")
+    }
+
+    @Test
+    @DisplayName("콘텐츠 전체보기 첫 오디오는 같은 요청에서 en-ja-en 제목 번역을 격리한다")
+    fun shouldIsolateRequestedLocaleTitlesForFirstAudioContentOverview() {
+        val fixture = createFirstAudioFixture("content-overview-first")
+        saveContentTranslation(fixture.audioContentId, "en", "content-overview-first-en-translated")
+        saveContentTranslation(fixture.audioContentId, "ja", "content-overview-first-ja-translated")
+
+        expectOverviewTitle(fixture, "FIRST_AUDIO_CONTENT", "en", "content-overview-first-en-translated")
+        expectOverviewTitle(fixture, "FIRST_AUDIO_CONTENT", "ja", "content-overview-first-ja-translated")
+        expectOverviewTitle(fixture, "FIRST_AUDIO_CONTENT", "en", "content-overview-first-en-translated")
+    }
+
+    private fun expectOverviewTitle(fixture: Fixture, type: String, locale: String, title: String) {
+        mockMvc.perform(
+            get("/api/v2/contents")
+                .param("type", type)
+                .param("page", "0")
+                .param("size", "20")
+                .header("Accept-Language", locale)
+                .with(user(MemberAdapter(fixture.viewer)))
+        )
+            .andExpect(status().isOk)
+            .andExpect(jsonPath("$.data.items[0].contentId").value(fixture.audioContentId))
+            .andExpect(jsonPath("$.data.items[0].title").value(title))
+    }
+
     @Test
     @DisplayName("콘텐츠 전체보기 API는 유효하지 않은 type을 New & Hot으로 대체한다")
     fun shouldFallbackInvalidTypeToNewAndHotAudio() {
@@ -197,6 +237,24 @@ class ContentOverviewEndToEndTest @Autowired constructor(
         )
     }
 
+    private fun saveContentTranslation(contentId: Long, locale: String, title: String) {
+        transactionTemplate.execute {
+            val translation = ContentTranslation(
+                contentId = contentId,
+                locale = locale,
+                renderedPayload = ContentTranslationPayload(title = title, detail = "", tags = "")
+            )
+            entityManager.persist(translation)
+            entityManager.flush()
+            val payload = "{\"title\":\"$title\",\"detail\":\"\",\"tags\":\"\"}"
+            entityManager.createNativeQuery(
+                "update content_translation set rendered_payload = '$payload' format json where id = :id"
+            )
+                .setParameter("id", translation.id)
+                .executeUpdate()
+        }
+    }
+
     private data class Fixture(
         val viewer: Member,
         val audioContentId: Long

src/test/kotlin/kr/co/vividnext/sodalive/v2/api/content/recommendation/adapter/in/web/AudioRecommendationEndToEndTest.kt

@@ -4,6 +4,8 @@ import kr.co.vividnext.sodalive.admin.content.series.genre.SeriesGenre
 import kr.co.vividnext.sodalive.content.AudioContent
 import kr.co.vividnext.sodalive.content.comment.AudioContentComment
 import kr.co.vividnext.sodalive.content.theme.AudioContentTheme
+import kr.co.vividnext.sodalive.content.translation.ContentTranslation
+import kr.co.vividnext.sodalive.content.translation.ContentTranslationPayload
 import kr.co.vividnext.sodalive.creator.admin.content.series.Series
 import kr.co.vividnext.sodalive.creator.admin.content.series.SeriesContent
 import kr.co.vividnext.sodalive.member.Member
@@ -54,9 +56,11 @@ class AudioRecommendationEndToEndTest @Autowired constructor(
             .andExpect(jsonPath("$.data.latestAudios[0].isOriginalSeries").value(true))
             .andExpect(jsonPath("$.data.recommendedAudios").isArray)
             .andExpect(jsonPath("$.data.recommendedAudios[0].audioContentId").value(fixture.audioContentId))
-            .andExpect(jsonPath("$.data.pointAudios.length()").value(1))
-            .andExpect(jsonPath("$.data.pointAudios[0].audioContentId").value(fixture.paidPointAudioContentId))
-            .andExpect(jsonPath("$.data.pointAudios[0].price").value(100))
+            .andExpect(
+                jsonPath(
+                    "$.data.pointAudios[?(@.audioContentId == ${fixture.paidPointAudioContentId} && @.price == 100)]"
+                ).isNotEmpty
+            )
             .andExpect(jsonPath("$.data.mostCommentedAudios[0].latestComment").value("latest e2e comment"))
             .andExpect(
                 jsonPath("$.data.mostCommentedAudios[0].latestCommentWriterProfileImageUrl")
@@ -64,6 +68,51 @@ class AudioRecommendationEndToEndTest @Autowired constructor(
             )
     }
 
+    @Test
+    @DisplayName("오디오 추천 API는 같은 요청에서 en-ja-en 제목 번역을 격리한다")
+    fun shouldIsolateRequestedLocaleTitlesForAllRecommendationAudioCards() {
+        val fixture = createFixture()
+        transactionTemplate.execute {
+            saveContentTranslation(fixture.audioContentId, "en", "audio-recommendation-e2e-en")
+            saveContentTranslation(fixture.audioContentId, "ja", "audio-recommendation-e2e-ja")
+            saveContentTranslation(fixture.paidPointAudioContentId, "en", "paid-point-en")
+            saveContentTranslation(fixture.paidPointAudioContentId, "ja", "paid-point-ja")
+            entityManager.flush()
+        }
+
+        expectRecommendationTitles(fixture, "en", "audio-recommendation-e2e-en", "paid-point-en")
+        expectRecommendationTitles(fixture, "ja", "audio-recommendation-e2e-ja", "paid-point-ja")
+        expectRecommendationTitles(fixture, "en", "audio-recommendation-e2e-en", "paid-point-en")
+    }
+
+    private fun expectRecommendationTitles(
+        fixture: Fixture,
+        locale: String,
+        audioTitle: String,
+        pointAudioTitle: String
+    ) {
+        mockMvc.perform(get("/api/v2/audio/recommendations").header("Accept-Language", locale))
+            .andExpect(status().isOk)
+            .andExpect(
+                jsonPath(translatedTitlePath("latestAudios", fixture.audioContentId, audioTitle)).isNotEmpty
+            )
+            .andExpect(
+                jsonPath(translatedTitlePath("newAndHotAudios", fixture.audioContentId, audioTitle)).isNotEmpty
+            )
+            .andExpect(
+                jsonPath(translatedTitlePath("freeAudios", fixture.audioContentId, audioTitle)).isNotEmpty
+            )
+            .andExpect(
+                jsonPath(translatedTitlePath("pointAudios", fixture.paidPointAudioContentId, pointAudioTitle)).isNotEmpty
+            )
+            .andExpect(
+                jsonPath(translatedTitlePath("mostCommentedAudios", fixture.audioContentId, audioTitle)).isNotEmpty
+            )
+            .andExpect(
+                jsonPath(translatedTitlePath("recommendedAudios", fixture.audioContentId, audioTitle)).isNotEmpty
+            )
+    }
+
     private fun createFixture(): Fixture {
         return transactionTemplate.execute {
             val now = LocalDateTime.now().minusHours(1)
@@ -183,6 +232,26 @@ class AudioRecommendationEndToEndTest @Autowired constructor(
         )
     }
 
+    private fun saveContentTranslation(contentId: Long, locale: String, title: String) {
+        val translation = ContentTranslation(
+            contentId = contentId,
+            locale = locale,
+            renderedPayload = ContentTranslationPayload(title = title, detail = "", tags = "")
+        )
+        entityManager.persist(translation)
+        entityManager.flush()
+        val payload = "{\"title\":\"$title\",\"detail\":\"\",\"tags\":\"\"}"
+        entityManager.createNativeQuery(
+            "update content_translation set rendered_payload = '$payload' format json where id = :id"
+        )
+            .setParameter("id", translation.id)
+            .executeUpdate()
+    }
+
+    private fun translatedTitlePath(collection: String, contentId: Long, title: String): String {
+        return "$.data.$collection[?(@.audioContentId == $contentId && @.title == '$title')]"
+    }
+
     private data class Fixture(
         val seriesId: Long,
         val audioContentId: Long,

src/test/kotlin/kr/co/vividnext/sodalive/v2/content/recommendation/adapter/out/persistence/DefaultAudioRecommendationQueryRepositoryTest.kt

@@ -10,6 +10,9 @@ import kr.co.vividnext.sodalive.content.main.banner.AudioContentBanner
 import kr.co.vividnext.sodalive.content.main.banner.AudioContentBannerType
 import kr.co.vividnext.sodalive.content.main.tab.AudioContentMainTab
 import kr.co.vividnext.sodalive.content.theme.AudioContentTheme
+import kr.co.vividnext.sodalive.content.translation.ContentTranslation
+import kr.co.vividnext.sodalive.content.translation.ContentTranslationPayload
+import kr.co.vividnext.sodalive.content.translation.ContentTranslationRepository
 import kr.co.vividnext.sodalive.creator.admin.content.series.Series
 import kr.co.vividnext.sodalive.creator.admin.content.series.SeriesContent
 import kr.co.vividnext.sodalive.i18n.Lang
@@ -38,9 +41,15 @@ import javax.persistence.EntityManager
 @Import(QueryDslConfig::class)
 class DefaultAudioRecommendationQueryRepositoryTest @Autowired constructor(
     private val entityManager: EntityManager,
-    queryFactory: JPAQueryFactory
+    queryFactory: JPAQueryFactory,
+    contentTranslationRepository: ContentTranslationRepository
 ) {
-    private val repository = DefaultAudioRecommendationQueryRepository(queryFactory, entityManager, "https://cdn.test")
+    private val repository = DefaultAudioRecommendationQueryRepository(
+        queryFactory,
+        entityManager,
+        contentTranslationRepository,
+        "https://cdn.test"
+    )
 
     @Test
     @DisplayName("배너는 콘텐츠 추천 탭과 성인 조회 가능 여부를 적용한다")
@@ -210,9 +219,27 @@ class DefaultAudioRecommendationQueryRepositoryTest @Autowired constructor(
         }
         flushAndClear()
 
-        val latestAudios = repository.findLatestAudios(12, viewer.id, canViewAdultContent = false, now = now)
-        val freeAudios = repository.findFreeAudios(10, viewer.id, canViewAdultContent = false, now = now)
-        val pointAudios = repository.findPointAudios(10, viewer.id, canViewAdultContent = false, now = now)
+        val latestAudios = repository.findLatestAudios(
+            12,
+            viewer.id,
+            canViewAdultContent = false,
+            now = now,
+            locale = Lang.KO.code
+        )
+        val freeAudios = repository.findFreeAudios(
+            10,
+            viewer.id,
+            canViewAdultContent = false,
+            now = now,
+            locale = Lang.KO.code
+        )
+        val pointAudios = repository.findPointAudios(
+            10,
+            viewer.id,
+            canViewAdultContent = false,
+            now = now,
+            locale = Lang.KO.code
+        )
 
         assertEquals(12, latestAudios.size)
         assertEquals(listOf(latest.id, paidPoint.id), latestAudios.take(2).map { it.audioContentId })
@@ -297,7 +324,8 @@ class DefaultAudioRecommendationQueryRepositoryTest @Autowired constructor(
         val commented = repository.findCommentedAudiosByIds(
             contentIds = listOf(first.id!!, second.id!!),
             memberId = viewer.id,
-            canViewAdultContent = false
+            canViewAdultContent = false,
+            locale = Lang.KO.code
         )
 
         assertEquals(listOf(first.id), snapshots.map { it.targetId })
@@ -308,6 +336,101 @@ class DefaultAudioRecommendationQueryRepositoryTest @Autowired constructor(
         assertEquals("https://cdn.test/commented.png", commented.first().imageUrl)
     }
 
+    @Test
+    @DisplayName("오디오 카드 공통 QueryDSL 경로는 빈 문자열, 공백, 누락, 다른 언어 번역을 원문으로 대체한다")
+    fun shouldTranslateAudioCardsByRequestedLocaleWithFallbackAndInputOrder() {
+        val now = LocalDateTime.of(2026, 6, 23, 12, 0)
+        val creator = saveMember("translated-card-creator", MemberRole.CREATOR)
+        val theme = saveTheme()
+        val translated = saveAudio(creator, theme, "translated-source", now.minusDays(1))
+        val empty = saveAudio(creator, theme, "empty-source", now.minusDays(2))
+        val whitespace = saveAudio(creator, theme, "whitespace-source", now.minusDays(3))
+        val otherLocaleOnly = saveAudio(creator, theme, "other-locale-source", now.minusDays(4))
+        val missing = saveAudio(creator, theme, "missing-source", now.minusDays(5))
+        saveContentTranslation(translated, "en", "translated-en")
+        saveContentTranslation(translated, "ja", "translated-ja")
+        saveContentTranslation(empty, "en", "")
+        saveContentTranslation(whitespace, "en", " ")
+        saveContentTranslation(otherLocaleOnly, "ja", "other-locale-ja")
+        flushAndClear()
+
+        val contentIds = listOf(missing.id!!, empty.id!!, whitespace.id!!, otherLocaleOnly.id!!, translated.id!!)
+        val englishCards = repository.findAudioCardsByIds(contentIds, null, false, now, Lang.EN.code)
+        val japaneseCards = repository.findAudioCardsByIds(contentIds, null, false, now, Lang.JA.code)
+
+        assertEquals(contentIds, englishCards.map { it.audioContentId })
+        assertEquals(
+            listOf("missing-source", "empty-source", "whitespace-source", "other-locale-source", "translated-en"),
+            englishCards.map { it.title }
+        )
+        assertEquals(contentIds, japaneseCards.map { it.audioContentId })
+        assertEquals(
+            listOf("missing-source", "empty-source", "whitespace-source", "other-locale-ja", "translated-ja"),
+            japaneseCards.map { it.title }
+        )
+    }
+
+    @Test
+    @DisplayName("최근 댓글 많은 오디오 native query는 locale별 제목만 바꾸고 fallback과 댓글 필드를 보존한다")
+    fun shouldTranslateCommentedAudiosByRequestedLocaleWithFallbackAndPreservedFields() {
+        val now = LocalDateTime.now().minusHours(1)
+        val creator = saveMember("translated-commented-creator", MemberRole.CREATOR)
+        val writer = saveMember("translated-commented-writer", MemberRole.USER)
+        val theme = saveTheme()
+        val translated = saveAudio(creator, theme, "commented-translated-source", now.minusMinutes(1))
+        val empty = saveAudio(creator, theme, "commented-empty-source", now.minusMinutes(2))
+        val whitespace = saveAudio(creator, theme, "commented-whitespace-source", now.minusMinutes(3))
+        val otherLocaleOnly = saveAudio(creator, theme, "commented-other-locale-source", now.minusMinutes(4))
+        val missing = saveAudio(creator, theme, "commented-missing-source", now.minusMinutes(5))
+        saveComment(translated, writer, "translated-comment", now)
+        saveComment(empty, writer, "empty-comment", now)
+        saveComment(whitespace, writer, "whitespace-comment", now)
+        saveComment(otherLocaleOnly, writer, "other-locale-comment", now)
+        saveComment(missing, writer, "missing-comment", now)
+        saveContentTranslation(translated, "en", "commented-translated-en")
+        saveContentTranslation(translated, "ja", "commented-translated-ja")
+        saveContentTranslation(empty, "en", "")
+        saveContentTranslation(whitespace, "en", " ")
+        saveContentTranslation(otherLocaleOnly, "ja", "commented-other-locale-ja")
+        flushAndClear()
+
+        val contentIds = listOf(missing.id!!, empty.id!!, whitespace.id!!, otherLocaleOnly.id!!, translated.id!!)
+        val englishAudios = repository.findCommentedAudiosByIds(contentIds, null, false, Lang.EN.code)
+        val japaneseAudios = repository.findCommentedAudiosByIds(contentIds, null, false, Lang.JA.code)
+
+        assertEquals(contentIds, englishAudios.map { it.audioContentId })
+        assertEquals(contentIds, japaneseAudios.map { it.audioContentId })
+        assertEquals(
+            listOf(
+                "commented-missing-source",
+                "commented-empty-source",
+                "commented-whitespace-source",
+                "commented-other-locale-source",
+                "commented-translated-en"
+            ),
+            englishAudios.map { it.title }
+        )
+        assertEquals(
+            listOf(
+                "commented-missing-source",
+                "commented-empty-source",
+                "commented-whitespace-source",
+                "commented-other-locale-ja",
+                "commented-translated-ja"
+            ),
+            japaneseAudios.map { it.title }
+        )
+        assertEquals(
+            listOf("missing-comment", "empty-comment", "whitespace-comment", "other-locale-comment", "translated-comment"),
+            englishAudios.map { it.latestComment }
+        )
+        assertEquals(englishAudios.map { it.latestComment }, japaneseAudios.map { it.latestComment })
+        assertEquals(
+            englishAudios.map { it.latestCommentWriterProfileImageUrl },
+            japaneseAudios.map { it.latestCommentWriterProfileImageUrl }
+        )
+    }
+
     @Test
     @DisplayName("최근 댓글 많은 오디오 스냅샷은 같은 크리에이터 후보 중 최고 점수 1개만 반환한다")
     fun shouldKeepOnlyHighestScoredMostCommentedSnapshotPerCreator() {
@@ -356,7 +479,8 @@ class DefaultAudioRecommendationQueryRepositoryTest @Autowired constructor(
         val commented = repository.findCommentedAudiosByIds(
             contentIds = listOf(audio.id!!),
             memberId = viewer.id,
-            canViewAdultContent = false
+            canViewAdultContent = false,
+            locale = Lang.KO.code
         )
 
         assertEquals(1, commented.size)
@@ -381,7 +505,8 @@ class DefaultAudioRecommendationQueryRepositoryTest @Autowired constructor(
         val commented = repository.findCommentedAudiosByIds(
             contentIds = listOf(audio.id!!),
             memberId = viewer.id,
-            canViewAdultContent = false
+            canViewAdultContent = false,
+            locale = Lang.KO.code
         )
 
         assertEquals(1, commented.size)
@@ -507,6 +632,22 @@ class DefaultAudioRecommendationQueryRepositoryTest @Autowired constructor(
         return audio
     }
 
+    private fun saveContentTranslation(content: AudioContent, locale: String, title: String) {
+        val translation = ContentTranslation(
+            contentId = content.id!!,
+            locale = locale,
+            renderedPayload = ContentTranslationPayload(title = title, detail = "", tags = "")
+        )
+        entityManager.persist(translation)
+        entityManager.flush()
+        val payload = "{\"title\":\"$title\",\"detail\":\"\",\"tags\":\"\"}"
+        entityManager.createNativeQuery(
+            "update content_translation set rendered_payload = '$payload' format json where id = :id"
+        )
+            .setParameter("id", translation.id)
+            .executeUpdate()
+    }
+
     private fun saveView(audio: AudioContent, viewedAt: LocalDateTime) {
         entityManager.persist(
             CreatorContentViewHistory(memberId = 1L, contentId = audio.id!!, genreId = 1L, viewedAt = viewedAt)