diff --git a/violet/lib/component/hitomi/displayed_tag.dart b/violet/lib/component/hitomi/displayed_tag.dart
index a159950e4..5cc1a9df0 100644
--- a/violet/lib/component/hitomi/displayed_tag.dart
+++ b/violet/lib/component/hitomi/displayed_tag.dart
@@ -4,9 +4,9 @@
 import 'package:violet/component/hitomi/tag_translate.dart';
 
 class DisplayedTag {
-  // artist, group, tag, series, character, uploader, type, class, language, prefix, page
+  // artist, group, tag, series, character, uploader, type, class, language, prefix, page, female, male
   String? group;
-  // <tag>, female:<tag>, male:<tag>
+  // <tag>
   String? name;
   // <translated-tag>
   String? translated;
@@ -14,33 +14,8 @@ class DisplayedTag {
   // tag := <group>:<name>
   DisplayedTag({String? tag, this.group, this.name, this.translated}) {
     if (tag != null) {
-      final maybeGroup = tag.split(':').first;
-      if ([
-        'artist',
-        'group',
-        'tag',
-        'series',
-        'character',
-        'uploader',
-        'type',
-        'class',
-        'language',
-        'prefix',
-        'page',
-      ].contains(maybeGroup)) {
-        group = maybeGroup;
-        name = tag.substring(tag.indexOf(':') + 1);
-      } else if (['female', 'male'].contains(maybeGroup)) {
-        group = 'tag';
-        name = tag;
-      }
-    }
-
-    if (group != null) {
-      if (['female', 'male'].contains(group)) {
-        if (!name!.startsWith('$group:')) name = '$group:$name';
-        group = 'tag';
-      }
+      group = tag.split(':').first;
+      name = tag.substring(tag.indexOf(':') + 1);
     }
   }
 
@@ -61,12 +36,4 @@ class DisplayedTag {
   String toString() {
     return getTag();
   }
-
-  // TODO: https://github.com/project-violet/violet/issues/440 로 삭제
-  bool groupEqualTo(String otherGroup) {
-    if (otherGroup == 'female' || otherGroup == 'male') {
-      return group == 'tag' && name!.startsWith(otherGroup);
-    }
-    return group == otherGroup;
-  }
 }
diff --git a/violet/lib/component/hitomi/hitomi.dart b/violet/lib/component/hitomi/hitomi.dart
index bc1058fca..7fda5dd51 100644
--- a/violet/lib/component/hitomi/hitomi.dart
+++ b/violet/lib/component/hitomi/hitomi.dart
@@ -4,6 +4,7 @@
 import 'dart:convert';
 import 'dart:io';
 
+import 'package:get/get.dart';
 import 'package:path/path.dart';
 import 'package:path_provider/path_provider.dart';
 import 'package:tuple/tuple.dart';
@@ -46,8 +47,6 @@ class HitomiManager {
 
   static String normalizeTagPrefix(String pp) {
     switch (pp) {
-      case 'female':
-      case 'male':
       case 'tags':
         return 'tag';
 
@@ -86,6 +85,24 @@ class HitomiManager {
         final text = path.readAsStringSync();
         tagmap = jsonDecode(text);
       }
+
+      // split `tag:female:` and `tag:male:` to `female:` and `male:`
+      if (tagmap!.containsKey('tag')) {
+        final tags = tagmap!['tag'] as Map<String, dynamic>;
+        final femaleTags = tags.entries
+            .where((e) => e.key.startsWith('female:'))
+            .map((e) => MapEntry(e.key.split(':')[1], e.value))
+            .toList();
+        final maleTags = tags.entries
+            .where((e) => e.key.startsWith('male:'))
+            .map((e) => MapEntry(e.key.split(':')[1], e.value))
+            .toList();
+        tagmap!['female'] = Map.fromEntries(femaleTags);
+        tagmap!['male'] = Map.fromEntries(maleTags);
+
+        tags.removeWhere(
+            (tag, _) => tag.startsWith('female:') || tag.startsWith('male:'));
+      }
     }
   }
 
@@ -108,44 +125,20 @@ class HitomiManager {
       String prefix, bool useTranslated) {
     final groupOrig = prefix.split(':')[0];
     final group = normalizeTagPrefix(groupOrig);
+    final name = prefix.split(':').last;
 
     final results = <Tuple2<DisplayedTag, int>>[];
     if (!tagmap!.containsKey(group)) return results;
 
     final nameCountsMap = tagmap![group] as Map<dynamic, dynamic>;
     if (!useTranslated) {
-      final tagContains = () {
-        switch (groupOrig) {
-          case 'female':
-          case 'male':
-            return (key) =>
-                key.toLowerCase().startsWith('$groupOrig:') &&
-                key.toLowerCase().contains(prefix);
-
-          case 'tag':
-            final po = prefix.split(':')[1];
-            return (key) =>
-                !key.toLowerCase().startsWith('female:') &&
-                !key.toLowerCase().startsWith('male:') &&
-                key.toLowerCase().contains(po);
-
-          default:
-            final po = prefix.split(':')[1];
-            return (key) => key.toLowerCase().contains(po) as bool;
-        }
-      }();
-
-      nameCountsMap.entries
-          .where((element) => tagContains(element.key))
-          .forEach((element) {
-        results.add(Tuple2<DisplayedTag, int>(
-            DisplayedTag(group: group, name: element.key), element.value));
-      });
+      results.addAll(nameCountsMap.entries
+          .where((e) => e.key.toString().toLowerCase().contains(name))
+          .map((e) => Tuple2<DisplayedTag, int>(
+              DisplayedTag(group: group, name: e.key), e.value)));
     } else {
-      final name = prefix.split(':').last;
       results.addAll(TagTranslate.containsTotal(name)
-          .where((e) =>
-              e.groupEqualTo(groupOrig) && nameCountsMap.containsKey(e.name))
+          .where((e) => e.group! == group && nameCountsMap.containsKey(e.name))
           .map((e) => Tuple2<DisplayedTag, int>(e, nameCountsMap[e.name])));
     }
     results.sort((a, b) => b.item2.compareTo(a.item2));
@@ -203,53 +196,28 @@ class HitomiManager {
     if (prefix.contains(':')) {
       final groupOrig = prefix.split(':')[0];
       final group = normalizeTagPrefix(groupOrig);
+      final name = prefix.split(':').last;
 
+      // <Tag, Similarity, Count>
       final results = <Tuple3<DisplayedTag, int, int>>[];
       if (!tagmap!.containsKey(group)) return <Tuple2<DisplayedTag, int>>[];
 
       final nameCountsMap = tagmap![group];
       if (!useTranslated) {
-        if (groupOrig == 'female' || groupOrig == 'male') {
-          nameCountsMap.forEach((key, value) {
-            if (key.toLowerCase().startsWith('$groupOrig:')) {
-              results.add(Tuple3<DisplayedTag, int, int>(
-                  DisplayedTag(group: groupOrig, name: key),
-                  Distance.levenshteinDistance(
-                      prefix.runes.toList(), key.runes.toList()),
-                  value));
-            }
-          });
-        } else if (groupOrig == 'tag') {
-          // CHECK: tag:female:~, tag:artist:~도 허용해야하는지?
-          final name = prefix.split(':').last;
-          nameCountsMap.forEach((key, value) {
-            if (!key.toLowerCase().startsWith('female:') &&
-                !key.toLowerCase().startsWith('male:')) {
-              results.add(Tuple3<DisplayedTag, int, int>(
-                  DisplayedTag(group: groupOrig, name: key),
-                  Distance.levenshteinDistance(
-                      name.runes.toList(), key.runes.toList()),
-                  value));
-            }
-          });
-        } else {
-          final name = prefix.split(':').last;
-          nameCountsMap.forEach((key, value) {
-            results.add(Tuple3<DisplayedTag, int, int>(
-                DisplayedTag(group: group, name: key),
-                Distance.levenshteinDistance(
-                    name.runes.toList(), key.runes.toList()),
-                value));
-          });
-        }
+        nameCountsMap.forEach((key, value) {
+          results.add(Tuple3<DisplayedTag, int, int>(
+              DisplayedTag(group: group, name: key),
+              Distance.levenshteinDistance(
+                  name.runes.toList(), key.runes.toList()),
+              value));
+        });
       } else {
-        final name = prefix.split(':').last;
         results.addAll(TagTranslate.containsFuzzingTotal(name)
             .where((e) =>
-                e.item1.groupEqualTo(groupOrig) &&
+                e.item1.group! == group &&
                 nameCountsMap.containsKey(e.item1.name))
             .map((e) => Tuple3<DisplayedTag, int, int>(
-                e.item1, nameCountsMap[e.item1.name], e.item2)));
+                e.item1, e.item2, nameCountsMap[e.item1.name])));
       }
       results.sort((a, b) => a.item2.compareTo(b.item2));
       return results
@@ -259,32 +227,13 @@ class HitomiManager {
       if (!useTranslated) {
         final results = <Tuple3<DisplayedTag, int, int>>[];
         tagmap!.forEach((group, value) {
-          if (group == 'tag') {
-            value.forEach((name, count) {
-              if (name.contains(':')) {
-                final split = name.split(':');
-                results.add(Tuple3<DisplayedTag, int, int>(
-                    DisplayedTag(group: split[0], name: name),
-                    Distance.levenshteinDistance(
-                        prefix.runes.toList(), split[1].runes.toList()),
-                    count));
-              } else {
-                results.add(Tuple3<DisplayedTag, int, int>(
-                    DisplayedTag(group: 'tag', name: name),
-                    Distance.levenshteinDistance(
-                        prefix.runes.toList(), name.runes.toList()),
-                    count));
-              }
-            });
-          } else {
-            value.forEach((name, count) {
-              results.add(Tuple3<DisplayedTag, int, int>(
-                  DisplayedTag(group: group, name: name),
-                  Distance.levenshteinDistance(
-                      prefix.runes.toList(), name.runes.toList()),
-                  count));
-            });
-          }
+          value.forEach((name, count) {
+            results.add(Tuple3<DisplayedTag, int, int>(
+                DisplayedTag(group: group, name: name),
+                Distance.levenshteinDistance(
+                    prefix.runes.toList(), name.runes.toList()),
+                count));
+          });
         });
         results.sort((a, b) => a.item2.compareTo(b.item2));
         return results
diff --git a/violet/lib/pages/search/search_bar_page.dart b/violet/lib/pages/search/search_bar_page.dart
index e81b190b9..46b0eb4de 100644
--- a/violet/lib/pages/search/search_bar_page.dart
+++ b/violet/lib/pages/search/search_bar_page.dart
@@ -675,7 +675,9 @@ class _SearchBarPageState extends State<SearchBarPage>
               ? token.split(':').last.replaceAll('_', ' ')
               : token.replaceAll('_', ' '))
           .map((e) => Tuple2<DisplayedTag, int>(
-              DisplayedTag(group: 'tag', name: e.item1),
+              DisplayedTag(
+                  group: e.item1.split(':').first,
+                  name: e.item1.split(':').last),
               (e.item2 * 100).toInt()))
           .toList();
     } else if (token.startsWith('series:')) {
@@ -785,14 +787,12 @@ class _SearchBarPageState extends State<SearchBarPage>
     }
 
     if (info.item2 > 0 && Settings.searchShowCount) {
-      count =
-          ' (${info.item2.toString() + (related && info.item1.group == 'tag' ? '%' : '')})';
+      count = ' (${info.item2.toString() + (related ? '%' : '')})';
     }
 
-    if (info.item1.group == 'tag' && info.item1.name!.startsWith('female:')) {
+    if (info.item1.group == 'female') {
       color = Colors.pink;
-    } else if (info.item1.group == 'tag' &&
-        info.item1.name!.startsWith('male:')) {
+    } else if (info.item1.group == 'male') {
       color = Colors.blue;
     } else if (info.item1.group == 'prefix') {
       color = Colors.orange;
@@ -884,11 +884,7 @@ class _SearchBarPageState extends State<SearchBarPage>
       labelPadding: const EdgeInsets.all(0.0),
       avatar: CircleAvatar(
         backgroundColor: Colors.grey.shade600,
-        child: Text(info.item1.group == 'tag' &&
-                (info.item1.name!.startsWith('female:') ||
-                    info.item1.name!.startsWith('male:'))
-            ? info.item1.name![0].toUpperCase()
-            : info.item1.group![0].toUpperCase()),
+        child: Text(info.item1.group![0].toUpperCase()),
       ),
       label: RichText(
           text: TextSpan(
@@ -907,12 +903,7 @@ class _SearchBarPageState extends State<SearchBarPage>
       onPressed: () async {
         // Insert text to cursor.
         if (info.item1.group != 'prefix') {
-          var insert = (info.item1.group == 'tag' &&
-                      (info.item1.name!.startsWith('female') ||
-                          info.item1.name!.startsWith('male'))
-                  ? info.item1.name
-                  : info.item1.getTag())!
-              .replaceAll(' ', '_');
+          final insert = info.item1.getTag().replaceAll(' ', '_');
 
           _searchController.text = _searchText!.substring(0, _insertPos) +
               insert +
@@ -923,11 +914,18 @@ class _SearchBarPageState extends State<SearchBarPage>
             extentOffset: _insertPos! + insert.length,
           );
 
-          if (info.item1.group == 'tag') {
-            _relatedLists = HitomiIndexs.getRelatedTag(
-                    info.item1.name!.replaceAll('_', ' '))
+          if (info.item1.group == 'tag' ||
+              info.item1.group == 'female' ||
+              info.item1.group == 'male') {
+            _relatedLists = HitomiIndexs.getRelatedTag(info.item1.group == 'tag'
+                    ? info.item1.name!.replaceAll('_', ' ')
+                    : info.item1.getTag().replaceAll('_', ' '))
                 .map((e) => Tuple2<DisplayedTag, int>(
-                    DisplayedTag(group: 'tag', name: e.item1),
+                    DisplayedTag(
+                        group: e.item1.contains(':')
+                            ? e.item1.split(':').first
+                            : 'tag',
+                        name: e.item1.split(':').last),
                     (e.item2 * 100).toInt()))
                 .toList();
             setState(() {});
diff --git a/violet/lib/pages/settings/tag_selector.dart b/violet/lib/pages/settings/tag_selector.dart
index efa828d30..82385ef6a 100644
--- a/violet/lib/pages/settings/tag_selector.dart
+++ b/violet/lib/pages/settings/tag_selector.dart
@@ -227,10 +227,11 @@ class _TagSelectorDialogState extends State<TagSelectorDialog> {
 
     if (info.item2 > 0 && _showCount) count = ' (${info.item2})';
 
-    if (info.item1.group == 'tag' && info.item1.name!.startsWith('female:')) {
+    print(info.item1);
+
+    if (info.item1.group == 'female') {
       color = Colors.pink;
-    } else if (info.item1.group == 'tag' &&
-        info.item1.name!.startsWith('male:')) {
+    } else if (info.item1.group == 'male') {
       color = Colors.blue;
     } else if (info.item1.group == 'prefix') {
       color = Colors.orange;
@@ -244,15 +245,11 @@ class _TagSelectorDialogState extends State<TagSelectorDialog> {
       color = Colors.orange;
     }
 
-    var fc = RawChip(
+    final fc = RawChip(
       labelPadding: const EdgeInsets.all(0.0),
       avatar: CircleAvatar(
         backgroundColor: Colors.grey.shade600,
-        child: Text(info.item1.group == 'tag' &&
-                (info.item1.name!.startsWith('female:') ||
-                    info.item1.name!.startsWith('male:'))
-            ? info.item1.name![0].toUpperCase()
-            : info.item1.group![0].toUpperCase()),
+        child: Text(info.item1.group![0].toUpperCase()),
       ),
       label: Text(
         ' $tagDisplayed$count',
@@ -267,12 +264,7 @@ class _TagSelectorDialogState extends State<TagSelectorDialog> {
       onPressed: () async {
         // Insert text to cursor.
         if (info.item1.group != 'prefix') {
-          var insert = (info.item1.group == 'tag' &&
-                      (info.item1.name!.startsWith('female') ||
-                          info.item1.name!.startsWith('male'))
-                  ? info.item1.name
-                  : info.item1.getTag())!
-              .replaceAll(' ', '_');
+          final insert = info.item1.getTag().replaceAll(' ', '_');
 
           _searchController.text = _searchText!.substring(0, _insertPos) +
               insert +
diff --git a/violet/test/query_test.dart b/violet/test/query_test.dart
index 712c9aa66..209501e19 100644
--- a/violet/test/query_test.dart
+++ b/violet/test/query_test.dart
@@ -17,7 +17,7 @@ void main() {
       final result0 = await HitomiManager.queryAutoComplete('fema');
       final result1 = await HitomiManager.queryAutoComplete('random:');
 
-      expect(result0[0].item1.toString(), 'tag:female:sole female');
+      expect(result0[0].item1.toString(), 'female:sole female');
       expect(result1.length, 0);
     });
 
@@ -25,8 +25,8 @@ void main() {
       final result0 = await HitomiManager.queryAutoComplete('단독여', true);
       final result1 = await HitomiManager.queryAutoComplete('male:단독', true);
 
-      expect(result0[0].item1.toString(), 'tag:female:sole female');
-      expect(result1[0].item1.toString(), 'tag:male:sole male');
+      expect(result0[0].item1.toString(), 'female:sole female');
+      expect(result1[0].item1.toString(), 'male:sole male');
     });
 
     test('Hitomi Query Auto Complete Fuzzy', () async {
@@ -38,7 +38,7 @@ void main() {
 
       expect(result0[0].item1.toString(), 'artist:michiking');
       expect(result1[0].item1.toString(), 'artist:michiking');
-      expect(result2[0].item1.toString(), 'tag:female:big breasts');
+      expect(result2[0].item1.toString(), 'female:big breasts');
     });
 
     test('Hitomi Query To Sql', () {