diff --git a/src/feature/album-entry/components/LetterContent.tsx b/src/feature/album-entry/components/LetterContent.tsx
index f4c91a44..b2e344f4 100644
--- a/src/feature/album-entry/components/LetterContent.tsx
+++ b/src/feature/album-entry/components/LetterContent.tsx
@@ -71,7 +71,7 @@ export default function LetterContent({ albumId }: LetterContentProps) {
           {data.eventDate}
         </p>
         {!data.isExpired && (
-          <span className='typo-caption-sm-medium text-text-basic-inverse bg-element-primary mt-3 inline-flex items-center rounded-full px-2.5 py-1'>
+          <span className='typo-caption-sm-medium text-text-basic-inverse bg-element-alpha-dark mt-3 inline-flex items-center rounded-full px-2.5 py-1'>
             앨범 소멸까지 {formatExpirationTime(data.expiredAt)}
           </span>
         )}
diff --git a/src/feature/album/4cut/components/ScreenAlbum4Cut.tsx b/src/feature/album/4cut/components/ScreenAlbum4Cut.tsx
index 5502fe3c..d42762e7 100644
--- a/src/feature/album/4cut/components/ScreenAlbum4Cut.tsx
+++ b/src/feature/album/4cut/components/ScreenAlbum4Cut.tsx
@@ -395,7 +395,7 @@ export const ActionButton = ({
   <button
     type='button'
     onClick={onClick}
-    className='bg-button-tertiary-fill text-text-subtle flex flex-1 items-center justify-center gap-1 rounded-[8px] py-[15px]'
+    className='text-text-subtle flex flex-1 items-center justify-center gap-1 rounded-[8px] bg-white py-[15px]'
   >
     <Icon width={24} height={24} color='var(--color-icon-basic)' />
     <span className='typo-body-1xl-semibold'>{text}</span>
diff --git a/src/feature/album/detail/components/AlbumBestCut.tsx b/src/feature/album/detail/components/AlbumBestCut.tsx
index 25c69870..8768d7aa 100644
--- a/src/feature/album/detail/components/AlbumBestCut.tsx
+++ b/src/feature/album/detail/components/AlbumBestCut.tsx
@@ -6,16 +6,20 @@ import { useRouter } from 'next/navigation';
 import { useEffect, useState } from 'react';
 import AlbumBestCutPhotoList from './AlbumBestCutPhotoList';
 
+import { AlbumDetailMode } from './ScreenAlbumDetail';
+
 const BEST_CUT_TOOLTIP_DISMISSED_KEY = 'best-cut-tooltip-dismissed';
 
 interface AlbumBestCutProps {
   albumId: string;
   photoCount?: number;
+  mode: AlbumDetailMode;
 }
 
 export default function AlbumBestCut({
   albumId,
   photoCount,
+  mode,
 }: AlbumBestCutProps) {
   const router = useRouter();
   const abGroup = useABTestGroup();
@@ -52,15 +56,18 @@ export default function AlbumBestCut({
               ? '네컷사진 미리보기'
               : abGroup === 'B'
                 ? '네컷사진 만들기'
-                : '이대로 네컷 확정하기'
+                : '네컷사진 확정하기'
           }
-          onClick={() => router.push(`/album/4cut/${albumId}`)}
+          onClick={() => {
+            handleCloseBubble();
+            router.push(`/album/4cut/${albumId}`);
+          }}
           noFixed
           disabled={photoCount < 4}
           height={48}
         />
 
-        {isBubbleVisible && (
+        {isBubbleVisible && mode !== 'select' && (
           <BubbleTooltip
             message={
               <span className='flex items-center gap-2 whitespace-nowrap'>
diff --git a/src/feature/album/detail/components/AlbumInfos.tsx b/src/feature/album/detail/components/AlbumInfos.tsx
index b7864c59..03bdd8cc 100644
--- a/src/feature/album/detail/components/AlbumInfos.tsx
+++ b/src/feature/album/detail/components/AlbumInfos.tsx
@@ -6,6 +6,8 @@ import { useShallow } from 'zustand/shallow';
 import AlbumBestCut from './AlbumBestCut';
 import { AlbumInfoSummary } from './AlbumInfoSummary';
 
+import { AlbumDetailMode } from './ScreenAlbumDetail';
+
 interface AlbumInfosProps {
   ref?: React.Ref<HTMLElement>;
   albumId: string;
@@ -13,9 +15,16 @@ interface AlbumInfosProps {
   isLoading: boolean;
   isError: boolean;
   photoCount?: number;
+  mode: AlbumDetailMode;
 }
 
-function AlbumInfos({ ref, albumId, photoCount, ...rest }: AlbumInfosProps) {
+function AlbumInfos({
+  ref,
+  albumId,
+  photoCount,
+  mode,
+  ...rest
+}: AlbumInfosProps) {
   const { albumType, setAlbumType } = useAlbumTypeStore(
     useShallow((state) => ({
       albumType: state.albumType,
@@ -31,7 +40,7 @@ function AlbumInfos({ ref, albumId, photoCount, ...rest }: AlbumInfosProps) {
       className='border-divider-gray-light flex flex-col gap-6 border-b-[6px] px-5 py-4'
     >
       <AlbumInfoSummary {...rest} />
-      <AlbumBestCut albumId={albumId} photoCount={photoCount} />
+      <AlbumBestCut albumId={albumId} photoCount={photoCount} mode={mode} />
     </section>
   );
 }
diff --git a/src/feature/album/detail/components/PhotoList.tsx b/src/feature/album/detail/components/PhotoList.tsx
index 1c36bbfa..f191c6ea 100644
--- a/src/feature/album/detail/components/PhotoList.tsx
+++ b/src/feature/album/detail/components/PhotoList.tsx
@@ -57,6 +57,7 @@ export default function PhotoList({
     addSelectedPhoto,
     deleteSelectedPhoto,
     clearSelectedPhotos,
+    setSelectedPhotos,
     isSelected,
   } = useSelectedPhotosStore(
     useShallow((state) => ({
@@ -64,6 +65,7 @@ export default function PhotoList({
       addSelectedPhoto: state.addSelectedPhoto,
       deleteSelectedPhoto: state.deleteSelectedPhoto,
       clearSelectedPhotos: state.clearSelectedPhotos,
+      setSelectedPhotos: state.setSelectedPhotos,
       isSelected: state.isSelected,
     })),
   );
@@ -169,6 +171,15 @@ export default function PhotoList({
     selectablePhotos.length > 0 &&
     selectablePhotos.every(({ photoId }) => selectedPhotoIds.has(photoId));
 
+  const selectableStorePhotos = useMemo(
+    () =>
+      selectablePhotos.map(({ photoId, imageUrl }) => ({
+        id: photoId,
+        url: imageUrl ?? '',
+      })),
+    [selectablePhotos],
+  );
+
   const handleToggleSelectAll = () => {
     if (isAllSelected) {
       setIsSelectAllMode(false);
@@ -176,19 +187,24 @@ export default function PhotoList({
       return;
     }
     setIsSelectAllMode(true);
-    selectablePhotos.forEach(({ photoId, imageUrl }) => {
-      addSelectedPhoto({ id: photoId, url: imageUrl ?? '' });
-    });
+    setSelectedPhotos(selectableStorePhotos);
   };
 
   useEffect(() => {
     if (mode !== 'select') return;
     if (!isSelectAllMode) return;
 
-    selectablePhotos.forEach(({ photoId, imageUrl }) => {
-      addSelectedPhoto({ id: photoId, url: imageUrl ?? '' });
-    });
-  }, [addSelectedPhoto, isSelectAllMode, mode, selectablePhotos]);
+    const currentSelected = useSelectedPhotosStore.getState().selectedPhotos;
+    const currentIds = new Set(currentSelected.map((p) => p.id));
+
+    const isDifferent =
+      currentSelected.length !== selectableStorePhotos.length ||
+      selectableStorePhotos.some((p) => !currentIds.has(p.id));
+
+    if (isDifferent) {
+      setSelectedPhotos(selectableStorePhotos);
+    }
+  }, [isSelectAllMode, mode, selectableStorePhotos, setSelectedPhotos]);
 
   return (
     <section ref={photoListRef} className='relative p-4'>
diff --git a/src/feature/album/detail/components/ScreenAlbumDetail.tsx b/src/feature/album/detail/components/ScreenAlbumDetail.tsx
index 1a693412..40ae99ee 100644
--- a/src/feature/album/detail/components/ScreenAlbumDetail.tsx
+++ b/src/feature/album/detail/components/ScreenAlbumDetail.tsx
@@ -206,6 +206,7 @@ export default function ScreenAlbumDetail({ albumId }: ScreenAlbumDetailProps) {
           isLoading={isInvitationLoading}
           isError={isInvitationError}
           photoCount={totalPhotoCount}
+          mode={mode}
         />
         <AlbumPhotoSection
           isLoading={isLoading}
diff --git a/src/store/useSelectedPhotosStore.ts b/src/store/useSelectedPhotosStore.ts
index 86bfe502..09076ccd 100644
--- a/src/store/useSelectedPhotosStore.ts
+++ b/src/store/useSelectedPhotosStore.ts
@@ -10,6 +10,7 @@ interface SelectedPhotosState {
   addSelectedPhoto: ({ id, url }: StorePhotoItem) => void;
   deleteSelectedPhoto: (photoId: number) => void;
   clearSelectedPhotos: () => void;
+  setSelectedPhotos: (photos: StorePhotoItem[]) => void;
   isSelected: (photoId: number) => boolean;
 }
 
@@ -34,6 +35,8 @@ export const useSelectedPhotosStore = create<SelectedPhotosState>(
 
     clearSelectedPhotos: () => set({ selectedPhotos: [] }),
 
+    setSelectedPhotos: (photos) => set({ selectedPhotos: photos }),
+
     isSelected: (photoId) => {
       const { selectedPhotos } = get();
       return selectedPhotos.some((p) => p.id === photoId);