diff --git a/src/main/kotlin/kr/co/vividnext/sodalive/chat/character/controller/ChatCharacterController.kt b/src/main/kotlin/kr/co/vividnext/sodalive/chat/character/controller/ChatCharacterController.kt
index 3957e08..055f2f3 100644
--- a/src/main/kotlin/kr/co/vividnext/sodalive/chat/character/controller/ChatCharacterController.kt
+++ b/src/main/kotlin/kr/co/vividnext/sodalive/chat/character/controller/ChatCharacterController.kt
@@ -92,7 +92,8 @@ class ChatCharacterController(
                             characterId = it.id!!,
                             name = it.name,
                             description = it.description,
-                            imageUrl = "$imageHost/${it.imagePath ?: "profile/default-profile.png"}"
+                            imageUrl = "$imageHost/${it.imagePath ?: "profile/default-profile.png"}",
+                            isNew = false
                         )
                     }
                 )
diff --git a/src/main/kotlin/kr/co/vividnext/sodalive/chat/character/dto/CharacterHomeResponse.kt b/src/main/kotlin/kr/co/vividnext/sodalive/chat/character/dto/CharacterHomeResponse.kt
index 6b848d9..824be47 100644
--- a/src/main/kotlin/kr/co/vividnext/sodalive/chat/character/dto/CharacterHomeResponse.kt
+++ b/src/main/kotlin/kr/co/vividnext/sodalive/chat/character/dto/CharacterHomeResponse.kt
@@ -21,7 +21,8 @@ data class Character(
     @JsonProperty("characterId") val characterId: Long,
     @JsonProperty("name") val name: String,
     @JsonProperty("description") val description: String,
-    @JsonProperty("imageUrl") val imageUrl: String
+    @JsonProperty("imageUrl") val imageUrl: String,
+    @JsonProperty("isNew") val isNew: Boolean
 )
 
 data class RecentCharacter(
diff --git a/src/main/kotlin/kr/co/vividnext/sodalive/chat/character/service/ChatCharacterService.kt b/src/main/kotlin/kr/co/vividnext/sodalive/chat/character/service/ChatCharacterService.kt
index 68d06aa..79eeacb 100644
--- a/src/main/kotlin/kr/co/vividnext/sodalive/chat/character/service/ChatCharacterService.kt
+++ b/src/main/kotlin/kr/co/vividnext/sodalive/chat/character/service/ChatCharacterService.kt
@@ -13,6 +13,7 @@ import kr.co.vividnext.sodalive.chat.character.ChatCharacterTag
 import kr.co.vividnext.sodalive.chat.character.ChatCharacterValue
 import kr.co.vividnext.sodalive.chat.character.dto.Character
 import kr.co.vividnext.sodalive.chat.character.dto.RecentCharactersResponse
+import kr.co.vividnext.sodalive.chat.character.image.CharacterImageRepository
 import kr.co.vividnext.sodalive.chat.character.repository.ChatCharacterGoalRepository
 import kr.co.vividnext.sodalive.chat.character.repository.ChatCharacterHobbyRepository
 import kr.co.vividnext.sodalive.chat.character.repository.ChatCharacterRepository
@@ -34,6 +35,7 @@ class ChatCharacterService(
     private val hobbyRepository: ChatCharacterHobbyRepository,
     private val goalRepository: ChatCharacterGoalRepository,
     private val popularCharacterQuery: PopularCharacterQuery,
+    private val imageRepository: CharacterImageRepository,
 
     @Value("\${cloud.aws.cloud-front.host}")
     private val imageHost: String
@@ -46,12 +48,25 @@ class ChatCharacterService(
         } else {
             chatCharacterRepository.findRandomActive(PageRequest.of(0, safeLimit))
         }
+
+        val recentSet = if (chars.isNotEmpty()) {
+            imageRepository
+                .findCharacterIdsWithRecentImages(
+                    chars.map { it.id!! },
+                    LocalDateTime.now().minusDays(3)
+                )
+                .toSet()
+        } else {
+            emptySet()
+        }
+
         return chars.map {
             Character(
                 characterId = it.id!!,
                 name = it.name,
                 description = it.description,
-                imageUrl = "$imageHost/${it.imagePath ?: "profile/default-profile.png"}"
+                imageUrl = "$imageHost/${it.imagePath ?: "profile/default-profile.png"}",
+                isNew = recentSet.contains(it.id)
             )
         }
     }
@@ -69,12 +84,25 @@ class ChatCharacterService(
         val window = RankingWindowCalculator.now("popular-character")
         val topIds = popularCharacterQuery.findPopularCharacterIds(window.windowStart, window.nextBoundary, limit)
         val list = loadCharactersInOrder(topIds)
+
+        val recentSet = if (list.isNotEmpty()) {
+            imageRepository
+                .findCharacterIdsWithRecentImages(
+                    list.map { it.id!! },
+                    LocalDateTime.now().minusDays(3)
+                )
+                .toSet()
+        } else {
+            emptySet()
+        }
+
         return list.map {
             Character(
                 characterId = it.id!!,
                 name = it.name,
                 description = it.description,
-                imageUrl = "$imageHost/${it.imagePath ?: "profile/default-profile.png"}"
+                imageUrl = "$imageHost/${it.imagePath ?: "profile/default-profile.png"}",
+                isNew = recentSet.contains(it.id)
             )
         }
     }
@@ -109,15 +137,28 @@ class ChatCharacterService(
                     content = emptyList()
                 )
             }
-            val fallback = chatCharacterRepository.findByIsActiveTrue(
+            val chars = chatCharacterRepository.findByIsActiveTrue(
                 PageRequest.of(0, 20, Sort.by("createdAt").descending())
-            )
-            val content = fallback.content.map {
+            ).content
+
+            val recentSet = if (chars.isNotEmpty()) {
+                imageRepository
+                    .findCharacterIdsWithRecentImages(
+                        chars.map { it.id!! },
+                        LocalDateTime.now().minusDays(3)
+                    )
+                    .toSet()
+            } else {
+                emptySet()
+            }
+
+            val content = chars.map {
                 Character(
                     characterId = it.id!!,
                     name = it.name,
                     description = it.description,
-                    imageUrl = "$imageHost/${it.imagePath ?: "profile/default-profile.png"}"
+                    imageUrl = "$imageHost/${it.imagePath ?: "profile/default-profile.png"}",
+                    isNew = recentSet.contains(it.id)
                 )
             }
             return RecentCharactersResponse(
@@ -126,16 +167,29 @@ class ChatCharacterService(
             )
         }
 
-        val pageResult = chatCharacterRepository.findRecentSince(
+        val chars = chatCharacterRepository.findRecentSince(
             since,
             PageRequest.of(safePage, safeSize)
-        )
-        val content = pageResult.content.map {
+        ).content
+
+        val recentSet = if (chars.isNotEmpty()) {
+            imageRepository
+                .findCharacterIdsWithRecentImages(
+                    chars.map { it.id!! },
+                    LocalDateTime.now().minusDays(3)
+                )
+                .toSet()
+        } else {
+            emptySet()
+        }
+
+        val content = chars.map {
             Character(
                 characterId = it.id!!,
                 name = it.name,
                 description = it.description,
-                imageUrl = "$imageHost/${it.imagePath ?: "profile/default-profile.png"}"
+                imageUrl = "$imageHost/${it.imagePath ?: "profile/default-profile.png"}",
+                isNew = recentSet.contains(it.id)
             )
         }
 
diff --git a/src/main/kotlin/kr/co/vividnext/sodalive/chat/original/controller/OriginalWorkController.kt b/src/main/kotlin/kr/co/vividnext/sodalive/chat/original/controller/OriginalWorkController.kt
index 43ad355..fab48a6 100644
--- a/src/main/kotlin/kr/co/vividnext/sodalive/chat/original/controller/OriginalWorkController.kt
+++ b/src/main/kotlin/kr/co/vividnext/sodalive/chat/original/controller/OriginalWorkController.kt
@@ -1,6 +1,8 @@
 package kr.co.vividnext.sodalive.chat.original.controller
 
+import kr.co.vividnext.sodalive.chat.character.ChatCharacter
 import kr.co.vividnext.sodalive.chat.character.dto.Character
+import kr.co.vividnext.sodalive.chat.character.image.CharacterImageRepository
 import kr.co.vividnext.sodalive.chat.original.dto.OriginalWorkDetailResponse
 import kr.co.vividnext.sodalive.chat.original.dto.OriginalWorkListItemResponse
 import kr.co.vividnext.sodalive.chat.original.dto.OriginalWorkListResponse
@@ -15,6 +17,7 @@ import org.springframework.web.bind.annotation.PathVariable
 import org.springframework.web.bind.annotation.RequestMapping
 import org.springframework.web.bind.annotation.RequestParam
 import org.springframework.web.bind.annotation.RestController
+import java.time.LocalDateTime
 
 /**
  * 앱용 원작(오리지널 작품) 공개 API
@@ -25,6 +28,8 @@ import org.springframework.web.bind.annotation.RestController
 @RequestMapping("/api/chat/original")
 class OriginalWorkController(
     private val queryService: OriginalWorkQueryService,
+    private val characterImageRepository: CharacterImageRepository,
+
     @Value("\${cloud.aws.cloud-front.host}")
     private val imageHost: String
 ) {
@@ -65,17 +70,34 @@ class OriginalWorkController(
         if (member.auth == null) throw SodaException("본인인증을 하셔야 합니다.")
 
         val ow = queryService.getOriginalWork(id)
-        val pageRes = queryService.getActiveCharactersPage(id, page = 0, size = 20)
-        val characters = pageRes.content.map {
-            val path = it.imagePath ?: "profile/default-profile.png"
-            Character(
-                characterId = it.id!!,
-                name = it.name,
-                description = it.description,
-                imageUrl = "$imageHost/$path"
-            )
+        val chars = queryService.getActiveCharactersPage(id, page = 0, size = 20).content
+
+        val recentSet = if (chars.isNotEmpty()) {
+            characterImageRepository
+                .findCharacterIdsWithRecentImages(
+                    chars.map { it.id!! },
+                    LocalDateTime.now().minusDays(3)
+                )
+                .toSet()
+        } else {
+            emptySet()
         }
-        val response = OriginalWorkDetailResponse.from(ow, imageHost, characters)
-        ApiResponse.ok(response)
+
+        ApiResponse.ok(
+            OriginalWorkDetailResponse.from(
+                ow,
+                imageHost,
+                chars.map<ChatCharacter, Character> {
+                    val path = it.imagePath ?: "profile/default-profile.png"
+                    Character(
+                        characterId = it.id!!,
+                        name = it.name,
+                        description = it.description,
+                        imageUrl = "$imageHost/$path",
+                        isNew = recentSet.contains(it.id)
+                    )
+                }
+            )
+        )
     }
 }
diff --git a/src/main/kotlin/kr/co/vividnext/sodalive/chat/original/service/OriginalWorkQueryService.kt b/src/main/kotlin/kr/co/vividnext/sodalive/chat/original/service/OriginalWorkQueryService.kt
index b6b88f5..c32f3d3 100644
--- a/src/main/kotlin/kr/co/vividnext/sodalive/chat/original/service/OriginalWorkQueryService.kt
+++ b/src/main/kotlin/kr/co/vividnext/sodalive/chat/original/service/OriginalWorkQueryService.kt
@@ -59,7 +59,7 @@ class OriginalWorkQueryService(
         val safePage = if (page < 0) 0 else page
         val safeSize = when {
             size <= 0 -> 20
-            size > 50 -> 50
+            size > 20 -> 20
             else -> size
         }
         val pageable = PageRequest.of(safePage, safeSize, Sort.by("createdAt").descending())