diff --git a/src/components/modals/create-evaluation-modal.tsx b/src/components/modals/create-evaluation-modal.tsx
index e6697bb7..22fcdb5a 100644
--- a/src/components/modals/create-evaluation-modal.tsx
+++ b/src/components/modals/create-evaluation-modal.tsx
@@ -112,7 +112,7 @@ function CreateEvaluationForm({
     ?.sort((a, b) => a.orderNum - b.orderNum)
     .map((grade) => ({
       value: grade.code,
-      label: `${grade.code} (${grade.score})`,
+      label: `${grade.label} (${grade.score === 0 ? '0' : grade.score.toFixed(1)})`,
     }));
 
   return (
diff --git a/src/components/modals/create-mission-modal.tsx b/src/components/modals/create-mission-modal.tsx
index ec1c78d7..2d265e82 100644
--- a/src/components/modals/create-mission-modal.tsx
+++ b/src/components/modals/create-mission-modal.tsx
@@ -29,12 +29,15 @@ const CreateMissionFormSchema = z.object({
     .min(1, '수행 가이드를 입력해주세요.')
     .max(1000, '1000자 이하로 작성가능합니다.'),
   dateRange: z
-    .object({
-      from: z.date({ error: '시작일을 선택해주세요.' }),
-      to: z.date({ error: '종료일을 선택해주세요.' }),
-    })
+    .object(
+      {
+        from: z.date({ message: '시작일을 선택해주세요.' }),
+        to: z.date({ message: '종료일을 선택해주세요.' }),
+      },
+      { message: '시작일과 종료일을 선택해주세요.' },
+    )
     .refine((data) => data.from && data.to && data.from <= data.to, {
-      message: '미션이 시작되면 수정 및 삭제가 불가합니다.',
+      message: '종료일은 시작일 이후여야 합니다.',
     }),
 });
 
diff --git a/src/components/modals/edit-evaluation-modal.tsx b/src/components/modals/edit-evaluation-modal.tsx
index 65c18b58..d5728fc3 100644
--- a/src/components/modals/edit-evaluation-modal.tsx
+++ b/src/components/modals/edit-evaluation-modal.tsx
@@ -122,7 +122,7 @@ function EditEvaluationForm({
     ?.sort((a, b) => a.orderNum - b.orderNum)
     .map((grade) => ({
       value: grade.code,
-      label: `${grade.code} (${grade.score})`,
+      label: `${grade.label} (${grade.score === 0 ? '0' : grade.score.toFixed(1)})`,
     }));
 
   return (
diff --git a/src/components/modals/edit-mission-modal.tsx b/src/components/modals/edit-mission-modal.tsx
index 3b2e668a..aa4ec2a7 100644
--- a/src/components/modals/edit-mission-modal.tsx
+++ b/src/components/modals/edit-mission-modal.tsx
@@ -28,11 +28,11 @@ const EditMissionFormSchema = z.object({
   guide: z.string().min(1, '수행 가이드를 입력해주세요.'),
   dateRange: z
     .object({
-      from: z.date({ error: '시작일을 선택해주세요.' }),
-      to: z.date({ error: '종료일을 선택해주세요.' }),
+      from: z.date({ message: '시작일을 선택해주세요.' }),
+      to: z.date({ message: '종료일을 선택해주세요.' }),
     })
     .refine((data) => data.from && data.to && data.from <= data.to, {
-      message: '미션이 시작되면 수정 및 삭제가 불가합니다.',
+      message: '종료일은 시작일 이후여야 합니다.',
     }),
 });
 
diff --git a/src/components/ui/toggle/group.tsx b/src/components/ui/toggle/group.tsx
index be31eb3c..993b59d7 100644
--- a/src/components/ui/toggle/group.tsx
+++ b/src/components/ui/toggle/group.tsx
@@ -82,7 +82,6 @@ function GroupItems(props: ToggleGroupProps) {
       role="group"
       aria-label="toggle-group"
     >
-      {}
       {options?.map(({ value: v, label }) => (
         <Item
           key={v}
diff --git a/src/features/study/group/channel/ui/comment-reaction.tsx b/src/features/study/group/channel/ui/comment-reaction.tsx
index ac015011..e38d8fc1 100644
--- a/src/features/study/group/channel/ui/comment-reaction.tsx
+++ b/src/features/study/group/channel/ui/comment-reaction.tsx
@@ -21,7 +21,7 @@ export function CommentReaction({
     retry: 0,
   });
 
-  const { reaction, counts, like, dislike, reconcile } = useReactionLogic({
+  const { reaction, counts, like, dislike } = useReactionLogic({
     initialReaction,
     initialCounts,
     mode: 'debounce',
diff --git a/src/features/study/group/channel/ui/comment-section.tsx b/src/features/study/group/channel/ui/comment-section.tsx
index 0eee20be..e9b2f070 100644
--- a/src/features/study/group/channel/ui/comment-section.tsx
+++ b/src/features/study/group/channel/ui/comment-section.tsx
@@ -61,7 +61,7 @@ export default function CommentSection({ groupStudyId }: CommentProps) {
           return (
             <div
               key={comment.threadId}
-              className="border-b-[1px] border-[#D5D7DA] pb-300"
+              className="border-b border-[#D5D7DA] pb-300"
             >
               <div className="flex flex-col gap-200">
                 <Comment