diff --git a/app/src/main/java/kr/co/vividnext/sodalive/v2/creator/channel/fantalk/detail/CreatorChannelFanTalkDetailUiModels.kt b/app/src/main/java/kr/co/vividnext/sodalive/v2/creator/channel/fantalk/detail/CreatorChannelFanTalkDetailUiModels.kt
new file mode 100644
index 00000000..52395b08
--- /dev/null
+++ b/app/src/main/java/kr/co/vividnext/sodalive/v2/creator/channel/fantalk/detail/CreatorChannelFanTalkDetailUiModels.kt
@@ -0,0 +1,101 @@
+package kr.co.vividnext.sodalive.v2.creator.channel.fantalk.detail
+
+import android.os.Parcelable
+import androidx.annotation.StringRes
+import kotlinx.parcelize.Parcelize
+import kr.co.vividnext.sodalive.R
+import kr.co.vividnext.sodalive.v2.creator.channel.fantalk.model.CreatorChannelFanTalkReplyUiModel
+import kr.co.vividnext.sodalive.v2.creator.channel.fantalk.model.CreatorChannelFanTalkRightAction
+import kr.co.vividnext.sodalive.v2.creator.channel.fantalk.model.CreatorChannelFanTalkUiModel
+
+@Parcelize
+data class CreatorChannelFanTalkDetailPayload(
+    val fanTalkId: Long,
+    val writerId: Long,
+    val writerNickname: String,
+    val writerProfileImageUrl: String,
+    val content: String,
+    val createdAtText: String,
+    val reply: CreatorChannelFanTalkDetailReplyPayload?,
+    val showEdit: Boolean,
+    val showDelete: Boolean
+) : Parcelable {
+    fun toUiModel(): CreatorChannelFanTalkUiModel = CreatorChannelFanTalkUiModel(
+        fanTalkId = fanTalkId,
+        writerId = writerId,
+        writerNickname = writerNickname,
+        writerProfileImageUrl = writerProfileImageUrl,
+        content = content,
+        createdAtText = createdAtText,
+        reply = reply?.toUiModel(),
+        rightAction = CreatorChannelFanTalkRightAction.OwnerMore(showEdit = showEdit, showDelete = showDelete)
+    )
+}
+
+@Parcelize
+data class CreatorChannelFanTalkDetailReplyPayload(
+    val fanTalkId: Long,
+    val writerId: Long,
+    val writerNickname: String,
+    val writerProfileImageUrl: String,
+    val content: String,
+    val createdAtText: String
+) : Parcelable {
+    fun toUiModel(): CreatorChannelFanTalkReplyUiModel = CreatorChannelFanTalkReplyUiModel(
+        fanTalkId = fanTalkId,
+        writerId = writerId,
+        writerNickname = writerNickname,
+        writerProfileImageUrl = writerProfileImageUrl,
+        content = content,
+        createdAtText = createdAtText
+    )
+}
+
+fun CreatorChannelFanTalkUiModel.toFanTalkDetailPayload(): CreatorChannelFanTalkDetailPayload {
+    val ownerMore = rightAction as? CreatorChannelFanTalkRightAction.OwnerMore
+    return CreatorChannelFanTalkDetailPayload(
+        fanTalkId = fanTalkId,
+        writerId = writerId,
+        writerNickname = writerNickname,
+        writerProfileImageUrl = writerProfileImageUrl,
+        content = content,
+        createdAtText = createdAtText,
+        reply = reply?.toFanTalkDetailReplyPayload(),
+        showEdit = ownerMore?.showEdit == true,
+        showDelete = ownerMore?.showDelete == true
+    )
+}
+
+fun CreatorChannelFanTalkReplyUiModel.toFanTalkDetailReplyPayload(): CreatorChannelFanTalkDetailReplyPayload {
+    return CreatorChannelFanTalkDetailReplyPayload(
+        fanTalkId = fanTalkId,
+        writerId = writerId,
+        writerNickname = writerNickname,
+        writerProfileImageUrl = writerProfileImageUrl,
+        content = content,
+        createdAtText = createdAtText
+    )
+}
+
+data class CreatorChannelFanTalkReplacementModalUiModel(
+    @StringRes val titleResId: Int = R.string.screen_user_profile_reply_edit,
+    @StringRes val descriptionResId: Int = R.string.creator_channel_fantalk_reply_replace_description,
+    @StringRes val cancelResId: Int = R.string.cancel,
+    @StringRes val confirmResId: Int = R.string.confirm
+)
+
+sealed interface CreatorChannelFanTalkDetailEditTarget {
+    data class Reply(val replyFanTalkId: Long) : CreatorChannelFanTalkDetailEditTarget
+}
+
+sealed interface CreatorChannelFanTalkDetailUiState {
+    data class Content(
+        val parentFanTalk: CreatorChannelFanTalkUiModel,
+        val reply: CreatorChannelFanTalkReplyUiModel?,
+        val replyInput: String = "",
+        val isSubmitting: Boolean = false,
+        val editingTarget: CreatorChannelFanTalkDetailEditTarget? = null
+    ) : CreatorChannelFanTalkDetailUiState {
+        val isSendEnabled: Boolean = replyInput.trim().isNotEmpty() && !isSubmitting
+    }
+}
diff --git a/app/src/main/res/values-en/strings.xml b/app/src/main/res/values-en/strings.xml
index 7b71a160..1761cc7a 100644
--- a/app/src/main/res/values-en/strings.xml
+++ b/app/src/main/res/values-en/strings.xml
@@ -1018,6 +1018,7 @@
     <string name="screen_user_profile_reply_edit">Edit reply</string>
     <string name="screen_user_profile_reply_submit">Submit</string>
     <string name="screen_user_profile_reply_write">Write a reply</string>
+    <string name="creator_channel_fantalk_reply_replace_description">The existing reply will be replaced with the new reply.\nDo you want to edit it?</string>
     <string name="screen_user_follower_list_title">Follower list</string>
     <string name="screen_user_follower_list_total_label">All</string>
     <string name="screen_user_follower_list_error_invalid_request">Invalid request.\ntry again.</string>
diff --git a/app/src/main/res/values-ja/strings.xml b/app/src/main/res/values-ja/strings.xml
index 7b3bcbbf..ba2bbf52 100644
--- a/app/src/main/res/values-ja/strings.xml
+++ b/app/src/main/res/values-ja/strings.xml
@@ -1018,6 +1018,7 @@
     <string name="screen_user_profile_reply_edit">返信修正</string>
     <string name="screen_user_profile_reply_submit">投稿</string>
     <string name="screen_user_profile_reply_write">返信を書く</string>
+    <string name="creator_channel_fantalk_reply_replace_description">既存の返信が新しい返信に置き換えられます。\n修正しますか？</string>
     <string name="screen_user_follower_list_title">フォロワーリスト</string>
     <string name="screen_user_follower_list_total_label">全</string>
     <string name="screen_user_follower_list_error_invalid_request">無効なリクエストです。\n恐れ入りますが、もう一度お試しください。</string>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 5e73da2e..7e5a9950 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -1017,6 +1017,7 @@
     <string name="screen_user_profile_reply_edit">답글 수정</string>
     <string name="screen_user_profile_reply_submit">등록</string>
     <string name="screen_user_profile_reply_write">답글 쓰기</string>
+    <string name="creator_channel_fantalk_reply_replace_description">기존 답글이 신규 답글로 대체됩니다.\n수정하시겠어요?</string>
     <string name="screen_user_follower_list_title">팔로워 리스트</string>
     <string name="screen_user_follower_list_total_label">전체</string>
     <string name="screen_user_follower_list_error_invalid_request">잘못된 요청입니다.\n다시 시도해 주세요.</string>