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 4b7dd4b..e8b6301 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 +1,7 @@
 package kr.co.vividnext.sodalive.chat.original.controller
 
 import kr.co.vividnext.sodalive.chat.character.dto.Character
+import kr.co.vividnext.sodalive.chat.original.dto.OriginalWorkCharactersPageResponse
 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
@@ -13,6 +14,7 @@ import org.springframework.security.core.annotation.AuthenticationPrincipal
 import org.springframework.web.bind.annotation.GetMapping
 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
 
 /**
@@ -50,6 +52,7 @@ class OriginalWorkController(
      * - 로그인 및 본인인증 필수
      * - 반환: 이미지, 제목, 콘텐츠 타입, 카테고리, 19금 여부, 작품 소개, 원작 링크
      * - 해당 원작의 활성 캐릭터 리스트 [imageUrl, name, description]
+     * - 캐릭터는 페이징 적용: 첫 페이지 20개
      */
     @GetMapping("/{id}")
     fun detail(
@@ -60,7 +63,8 @@ class OriginalWorkController(
         if (member.auth == null) throw SodaException("본인인증을 하셔야 합니다.")
 
         val ow = queryService.getOriginalWork(id)
-        val characters = queryService.getActiveCharacters(id).map {
+        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!!,
@@ -72,4 +76,37 @@ class OriginalWorkController(
         val response = OriginalWorkDetailResponse.from(ow, imageHost, characters)
         ApiResponse.ok(response)
     }
+
+    /**
+     * 지정 원작에 속한 활성 캐릭터 목록 조회 (페이징)
+     * - 로그인 및 본인인증 필수
+     * - 기본 페이지 사이즈 20
+     */
+    @GetMapping("/{id}/characters")
+    fun listCharacters(
+        @PathVariable id: Long,
+        @RequestParam(defaultValue = "0") page: Int,
+        @RequestParam(defaultValue = "20") size: Int,
+        @AuthenticationPrincipal(expression = "#this == 'anonymousUser' ? null : member") member: Member?
+    ) = run {
+        if (member == null) throw SodaException("로그인 정보를 확인해주세요.")
+        if (member.auth == null) throw SodaException("본인인증을 하셔야 합니다.")
+
+        val pageRes = queryService.getActiveCharactersPage(id, page, size)
+        val content = pageRes.content.map {
+            val path = it.imagePath ?: "profile/default-profile.png"
+            Character(
+                characterId = it.id!!,
+                name = it.name,
+                description = it.description,
+                imageUrl = "$imageHost/$path"
+            )
+        }
+        ApiResponse.ok(
+            OriginalWorkCharactersPageResponse(
+                totalCount = pageRes.totalElements,
+                content = content
+            )
+        )
+    }
 }
diff --git a/src/main/kotlin/kr/co/vividnext/sodalive/chat/original/dto/OriginalWorkAppDtos.kt b/src/main/kotlin/kr/co/vividnext/sodalive/chat/original/dto/OriginalWorkAppDtos.kt
index 9c38622..7520eca 100644
--- a/src/main/kotlin/kr/co/vividnext/sodalive/chat/original/dto/OriginalWorkAppDtos.kt
+++ b/src/main/kotlin/kr/co/vividnext/sodalive/chat/original/dto/OriginalWorkAppDtos.kt
@@ -75,3 +75,11 @@ data class OriginalWorkDetailResponse(
         }
     }
 }
+
+/**
+ * 앱용: 원작별 활성 캐릭터 페이징 응답 DTO
+ */
+data class OriginalWorkCharactersPageResponse(
+    @JsonProperty("totalCount") val totalCount: Long,
+    @JsonProperty("content") val content: List<Character>
+)
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 1377dab..01dc3e6 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
@@ -5,6 +5,9 @@ import kr.co.vividnext.sodalive.chat.character.repository.ChatCharacterRepositor
 import kr.co.vividnext.sodalive.chat.original.OriginalWork
 import kr.co.vividnext.sodalive.chat.original.OriginalWorkRepository
 import kr.co.vividnext.sodalive.common.SodaException
+import org.springframework.data.domain.Page
+import org.springframework.data.domain.PageRequest
+import org.springframework.data.domain.Sort
 import org.springframework.stereotype.Service
 import org.springframework.transaction.annotation.Transactional
 
@@ -36,10 +39,21 @@ class OriginalWorkQueryService(
     }
 
     /**
-     * 지정 원작에 속한 활성 캐릭터 목록 조회 (최신순)
+     * 지정 원작에 속한 활성 캐릭터 페이징 조회 (최신순)
      */
     @Transactional(readOnly = true)
-    fun getActiveCharacters(originalWorkId: Long): List<ChatCharacter> {
-        return chatCharacterRepository.findByOriginalWorkIdAndIsActiveTrueOrderByCreatedAtDesc(originalWorkId)
+    fun getActiveCharactersPage(originalWorkId: Long, page: Int = 0, size: Int = 20): Page<ChatCharacter> {
+        // 원작 존재 및 소프트 삭제 여부 확인
+        originalWorkRepository.findByIdAndIsDeletedFalse(originalWorkId)
+            .orElseThrow { SodaException("해당 원작을 찾을 수 없습니다") }
+
+        val safePage = if (page < 0) 0 else page
+        val safeSize = when {
+            size <= 0 -> 20
+            size > 50 -> 50
+            else -> size
+        }
+        val pageable = PageRequest.of(safePage, safeSize, Sort.by("createdAt").descending())
+        return chatCharacterRepository.findByOriginalWorkIdAndIsActiveTrue(originalWorkId, pageable)
     }
 }