diff --git a/Language/JSON.cs b/Language/JSON.cs
index 9c4be15..5907b9c 100644
--- a/Language/JSON.cs
+++ b/Language/JSON.cs
@@ -1,6 +1,6 @@
 namespace Language
 {
-    public static class JSON
+    public struct JSON
     {
         public struct Client
         {
@@ -14,7 +14,7 @@
 
         public struct N2MT
         {
-            public MSG message = new MSG();
+            public MSG message = new();
 
             public N2MT()
             {
@@ -22,7 +22,7 @@
 
             public struct MSG
             {
-                public Data result = new Data();
+                public Data result = new();
 
                 public MSG()
                 {
diff --git a/Language/Language.cs b/Language/Language.cs
index c3c2ff4..b024fba 100644
--- a/Language/Language.cs
+++ b/Language/Language.cs
@@ -6,12 +6,16 @@
 
 var wwwClient = new HttpClient();
 
+var defaultJSONConfigure = new JsonSerializerOptions
+{
+    IncludeFields = true
+};
 var assetsClientJSON = JsonSerializer.Deserialize<JSON.Client>(await File.ReadAllBytesAsync(Path.Combine(AppContext.BaseDirectory, "Assets", "Client.json")), new JsonSerializerOptions
 {
     IncludeFields = true
 });
-wwwClient.DefaultRequestHeaders.Add("X-Naver-Client-Id", assetsClientJSON.nhnID);
-wwwClient.DefaultRequestHeaders.Add("X-Naver-Client-Secret", assetsClientJSON.nhnPw);
+wwwClient.DefaultRequestHeaders.Add("X-NCP-APIGW-API-KEY-ID", assetsClientJSON.nhnID);
+wwwClient.DefaultRequestHeaders.Add("X-NCP-APIGW-API-KEY", assetsClientJSON.nhnPw);
 
 var qwilightEntryPath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.UserProfile), "source", "repos", "Qwilight");
 var twilightEntryPath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.UserProfile), "IdeaProjects", "Twilight");
@@ -272,7 +276,7 @@
 
 async ValueTask<string> N2Mt(string targetLanguage, string src)
 {
-    var t = await wwwClient.SendAsync(new HttpRequestMessage(HttpMethod.Post, "https://openapi.naver.com/v1/papago/n2mt")
+    var t = await wwwClient.SendAsync(new HttpRequestMessage(HttpMethod.Post, "https://naveropenapi.apigw.ntruss.com/nmt/v1/translation")
     {
         Content = new FormUrlEncodedContent(new[] { KeyValuePair.Create("source", "ko"), KeyValuePair.Create("target", targetLanguage), KeyValuePair.Create("text", src) }),
         Version = HttpVersion.Version20
@@ -280,10 +284,7 @@
     var text = await t.Content.ReadAsStringAsync().ConfigureAwait(false);
     if (t.IsSuccessStatusCode)
     {
-        return JsonSerializer.Deserialize<JSON.N2MT>(text, new JsonSerializerOptions
-        {
-            IncludeFields = true
-        }).message.result.translatedText;
+        return JsonSerializer.Deserialize<JSON.N2MT>(text, defaultJSONConfigure).message.result.translatedText;
     }
     else
     {
diff --git a/Qwilight/Assets/Language.json b/Qwilight/Assets/Language.json
index 3123a6c..c67cb9b 100644
--- a/Qwilight/Assets/Language.json
+++ b/Qwilight/Assets/Language.json
@@ -707,6 +707,22 @@
     "ko-KR": "업데이트 내역",
     "en-US": "Update History"
   },
+  "DateText0": {
+    "ko-KR": "{0}초 전",
+    "en-US": "$200 seconds before"
+  },
+  "DateText1": {
+    "ko-KR": "{0}분 전",
+    "en-US": "$200 minutes ago"
+  },
+  "DateText2": {
+    "ko-KR": "{0}시간 전",
+    "en-US": "$200 hours ago"
+  },
+  "DateText3": {
+    "ko-KR": "{0}일 전",
+    "en-US": "$200 days ago"
+  },
   "DBConfigure": {
     "ko-KR": "데이터베이스 설정",
     "en-US": "Database Settings"
diff --git a/Qwilight/Qwilight.csproj b/Qwilight/Qwilight.csproj
index a012f16..a38dbbf 100644
--- a/Qwilight/Qwilight.csproj
+++ b/Qwilight/Qwilight.csproj
@@ -35,6 +35,14 @@
 		<RuntimeIdentifier>win-arm64</RuntimeIdentifier>
 	</PropertyGroup>
 
+	<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+	  <Optimize>False</Optimize>
+	</PropertyGroup>
+
+	<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|ARM64'">
+	  <Optimize>False</Optimize>
+	</PropertyGroup>
+
 	<ItemGroup>
 		<PackageReference Include="AuraServiceLib.NET" Version="1.0.1" />
 		<PackageReference Include="CommandLineParser" Version="2.9.1" />
diff --git a/Qwilight/System/DB.cs b/Qwilight/System/DB.cs
index a44d8ca..dd3e918 100644
--- a/Qwilight/System/DB.cs
+++ b/Qwilight/System/DB.cs
@@ -566,7 +566,7 @@
                 {
                     NoteFileCount = noteFileCount,
                     Date = date,
-                    DateText = date.ToString("yyyy-MM-dd HH:mm:ss"),
+                    DateText = Utility.GetDateText(date),
                     CommentID = rows.GetString("Comment"),
                     AvatarName = rows.GetString("Name"),
                     ModeComponentValue = new()
diff --git a/Qwilight/System/LanguageSystem/LanguageSystem.g.cs b/Qwilight/System/LanguageSystem/LanguageSystem.g.cs
index 4e34e94..d01d772 100644
--- a/Qwilight/System/LanguageSystem/LanguageSystem.g.cs
+++ b/Qwilight/System/LanguageSystem/LanguageSystem.g.cs
@@ -179,6 +179,10 @@
         public string DataCount3Contents { get; set; }
         public string DataCount3Text { get; set; }
         public string DateAssistText { get; set; }
+        public string DateText0 { get; set; }
+        public string DateText1 { get; set; }
+        public string DateText2 { get; set; }
+        public string DateText3 { get; set; }
         public string DBConfigure { get; set; }
         public string DefaultAudioFilePathText { get; set; }
         public string DefaultAudioVarietyContents { get; set; }
diff --git a/Qwilight/Utilities/Utility.cs b/Qwilight/Utilities/Utility.cs
index 3d5c38c..085cb5c 100644
--- a/Qwilight/Utilities/Utility.cs
+++ b/Qwilight/Utilities/Utility.cs
@@ -360,7 +360,7 @@
                     IsTwilightComment = true,
                     NoteFileCount = 1,
                     Date = dateValue ?? DateTime.MinValue,
-                    DateText = dateValue?.ToString("yyyy-MM-dd HH:mm:ss") ?? "❌",
+                    DateText = dateValue != null ? Utility.GetDateText(dateValue.Value) : "❌",
                     CommentID = data.commentID,
                     AvatarName = data.avatarName,
                     ModeComponentValue = new()
@@ -545,5 +545,28 @@
             using var targetWMI = new ManagementObjectSearcher(textWMI);
             return targetWMI.Get().Cast<ManagementBaseObject>();
         }
+
+        public static string GetDateText(DateTime date)
+        {
+            var value = DateTime.Now - date;
+            var total = value.TotalSeconds;
+            if (total < 60)
+            {
+                return string.Format(LanguageSystem.Instance.DateText0, value.Seconds);
+            }
+            if (total < 60 * 60)
+            {
+                return string.Format(LanguageSystem.Instance.DateText1, value.Minutes);
+            }
+            if (total < 60 * 60 * 24)
+            {
+                return string.Format(LanguageSystem.Instance.DateText2, value.Hours);
+            }
+            if (total < 60 * 60 * 24 * 30)
+            {
+                return string.Format(LanguageSystem.Instance.DateText3, value.Days);
+            }
+            return date.ToString("yyyy-MM-dd HH:mm:ss");
+        }
     }
 }
\ No newline at end of file
diff --git a/Qwilight/ViewModel/WwwLevelViewModel.cs b/Qwilight/ViewModel/WwwLevelViewModel.cs
index 2526e0d..270fd7d 100644
--- a/Qwilight/ViewModel/WwwLevelViewModel.cs
+++ b/Qwilight/ViewModel/WwwLevelViewModel.cs
@@ -841,7 +841,7 @@
                         AvatarWwwValue = new(avatar.avatarID),
                         AvatarName = avatar.avatarName
                     }).ToArray());
-                    WwwLevelAvatarValue ??= _lastWwwLevelAvatar ?? WwwLevelAvatarCollection.FirstOrDefault();
+                    WwwLevelAvatarValue ??= _lastWwwLevelAvatar;
                 }
                 IsAvatarIDsLoading = false;
             });