diff --git a/android/app/build.gradle b/android/app/build.gradle
index a8ae76a..52f02cd 100644
--- a/android/app/build.gradle
+++ b/android/app/build.gradle
@@ -43,8 +43,8 @@ android {
 
     defaultConfig {
         // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
-        applicationId "com.example.tangocard_reader"
-        minSdkVersion 16
+        applicationId "xyz.h7x4.tangocard_reader"
+        minSdkVersion 26
         targetSdkVersion 30
         versionCode flutterVersionCode.toInteger()
         versionName flutterVersionName
diff --git a/lib/components/flashcard.dart b/lib/components/flashcard.dart
index 9841d91..594b8da 100644
--- a/lib/components/flashcard.dart
+++ b/lib/components/flashcard.dart
@@ -1,7 +1,7 @@
 import 'dart:math';
 
-import 'package:tangocard_reader/models/yokutango_entry.dart';
 import 'package:flutter/material.dart';
+import 'package:tangocard_reader/models/data_entry.dart';
 
 class Flashcard extends StatelessWidget {
   final YokutangoEntry? card;
diff --git a/lib/models/data_entry.dart b/lib/models/data_entry.dart
new file mode 100644
index 0000000..0ec9b95
--- /dev/null
+++ b/lib/models/data_entry.dart
@@ -0,0 +1,6 @@
+part 'yokutango_entry.dart';
+part 'kanji_entry.dart';
+
+abstract class DataEntry {
+  const DataEntry();
+}
\ No newline at end of file
diff --git a/lib/models/kanji_entry.dart b/lib/models/kanji_entry.dart
new file mode 100644
index 0000000..e55e2f8
--- /dev/null
+++ b/lib/models/kanji_entry.dart
@@ -0,0 +1,53 @@
+part of 'data_entry.dart';
+
+class KanjiEntry extends DataEntry {
+  final String kanji;
+  final List<WordConstruct> kana;
+
+  KanjiEntry.fromJson(Map<String, dynamic> json)
+      : kanji = json['kanji'] as String,
+        kana = [
+          for (final j in json['kana'] as List) WordConstruct.fromJson(j)
+        ];
+
+        @override
+        String toString() {
+          return '$kanji - ${kana.join('、')}';
+        }
+}
+
+class WordConstruct {
+  final List<WordPiece> pieces;
+
+  WordConstruct({required this.pieces});
+
+  WordConstruct.fromJson(dynamic json)
+      : pieces = (json is String)
+            ? [WordPiece(word: json, isActive: true)]
+            : [for (final j in json as List) WordPiece.fromJson(j)];
+  
+  @override
+  String toString() {
+    return pieces.map((p) => p.isActive ? p.word : '(${p.word})').join('');
+  }
+}
+
+class WordPiece {
+  final String? kana;
+  final String? romaji;
+  final String word;
+  final bool isActive;
+
+  const WordPiece({
+    required this.word,
+    this.kana,
+    this.romaji,
+    this.isActive = false,
+  });
+
+  WordPiece.fromJson(Map<String, dynamic> json)
+      : kana = json['kana'] as String?,
+        romaji = json['romaji'] as String?,
+        word = json['text'] as String,
+        isActive = json['active'] as bool? ?? false;
+}
diff --git a/lib/models/router_args.dart b/lib/models/router_args.dart
index 6d55d35..705912b 100644
--- a/lib/models/router_args.dart
+++ b/lib/models/router_args.dart
@@ -1,7 +1,7 @@
-import 'package:tangocard_reader/models/yokutango_entry.dart';
+import 'data_entry.dart';
 
 class BenkyouArgs {
-  final List<YokutangoEntry> cards;
+  final List<DataEntry> cards;
   final int? index;
 
   const BenkyouArgs({required this.cards, this.index});
diff --git a/lib/models/yokutango_entry.dart b/lib/models/yokutango_entry.dart
index 0a425ab..5cc6386 100644
--- a/lib/models/yokutango_entry.dart
+++ b/lib/models/yokutango_entry.dart
@@ -1,4 +1,6 @@
-class YokutangoEntry {
+part of 'data_entry.dart';
+
+class YokutangoEntry extends DataEntry {
   final List<JapaneseWord> japanese;
   final List<NorwegianWord> norwegian;
 
diff --git a/lib/router.dart b/lib/router.dart
index 20dfca5..195cf6a 100644
--- a/lib/router.dart
+++ b/lib/router.dart
@@ -1,11 +1,14 @@
 import 'dart:io';
 
+import 'package:tangocard_reader/models/data_entry.dart';
 import 'package:tangocard_reader/models/router_args.dart';
-import 'package:tangocard_reader/screens/flashcard.dart';
+import 'package:tangocard_reader/screens/practise/flashcard.dart';
 import 'package:tangocard_reader/screens/home.dart';
-import 'package:tangocard_reader/screens/tango_list.dart';
+import 'package:tangocard_reader/screens/pages/tango_list.dart';
 import 'package:flutter/material.dart';
 
+import 'screens/pages/kanji_list.dart';
+
 class PageRouter {
   static Route<dynamic> generateRoute(RouteSettings settings) {
     final args = settings.arguments;
@@ -14,22 +17,41 @@ class PageRouter {
       case '/':
         return MaterialPageRoute(builder: (_) => const Home());
 
-      case '/tangolist':
+      case '/list/tango':
         final file = args as File;
         return MaterialPageRoute(builder: (_) => TangoList(file: file));
 
-      case '/benkyou':
+      case '/list/kanji':
+        final file = args as File;
+        return MaterialPageRoute(builder: (_) => KanjiList(file: file));
+
+      case '/benkyou/tango':
         final benkyouArgs = args as BenkyouArgs;
         return MaterialPageRoute(
           builder: (_) => FlashcardView(
-            cards: benkyouArgs.cards,
+            cards: benkyouArgs.cards as List<YokutangoEntry>,
             index: benkyouArgs.index,
           ),
         );
 
+      case '/benkyou/kanji':
+        // final benkyouArgs = args as BenkyouArgs;
+        // return MaterialPageRoute(
+        //   builder: (_) => FlashcardView(
+        //     cards: benkyouArgs.cards as List<YokutangoEntry>,
+        //     index: benkyouArgs.index,
+        //   ),
+        // );
+
       default:
         return MaterialPageRoute(
-            builder: (_) => const Text("ERROR: this route does not exist"));
+          builder: (_) => Scaffold(
+            appBar: AppBar(title: const Text('Error')),
+            body:  Center(
+              child: ErrorWidget('No such route...')
+            ),
+          ),
+        );
     }
   }
 }
diff --git a/lib/screens/home.dart b/lib/screens/home.dart
index 383449f..44d1e8e 100644
--- a/lib/screens/home.dart
+++ b/lib/screens/home.dart
@@ -1,81 +1,37 @@
-import 'dart:convert';
-import 'dart:io';
-
-import 'package:tangocard_reader/models/yokutango_entry.dart';
-import 'package:tangocard_reader/screens/error.dart';
-import 'package:tangocard_reader/screens/loading.dart';
 import 'package:flutter/material.dart';
-import 'package:flutter/services.dart';
+import 'package:tangocard_reader/service/tangocard_files.dart';
 
-class Home extends StatelessWidget {
+import 'pages/tango_set_list.dart';
+
+class Home extends StatefulWidget {
   const Home({Key? key}) : super(key: key);
 
   @override
-  Widget build(BuildContext context) {
-    return Scaffold(
+  State<Home> createState() => _HomeState();
+}
+
+class _HomeState extends State<Home> {
+  int page = 0;
+
+  final _pages = [
+    TangoSetList(files: tangocardFilePaths, route: '/list/tango',),
+    TangoSetList(files: kanjicardFilePaths, route: '/list/kanji',),
+  ];
+
+  @override
+  Widget build(BuildContext context) => Scaffold(
         appBar: AppBar(
           title: const Text("よく単語"),
           centerTitle: true,
         ),
-        body: const TangocardList());
-  }
-}
-
-class TangocardList extends StatelessWidget {
-  const TangocardList({Key? key}) : super(key: key);
-
-  Future<Map<File, List<YokutangoEntry>>> get tangocardFilePaths => rootBundle
-      .loadString('AssetManifest.json')
-      .then(
-        (json) => jsonDecode(json)
-            .keys
-            .where((String key) =>
-                key.contains('yokutango/json/') && key.contains('.json'))
-            .toList(),
-      )
-      .then(
-        (l) async => Map.fromIterables(
-          l.map<File>((f) => File(f)),
-          await Future.wait<List<YokutangoEntry>>(
-            l
-                .map<Future<List<YokutangoEntry>>>(
-                  (String t) => rootBundle
-                      .loadString(t)
-                      .then<List<YokutangoEntry>>((s) => jsonDecode(s)
-                          .map<YokutangoEntry>(
-                              (e) => YokutangoEntry.fromJson(e))
-                          .toList()),
-                )
-          ),
+        body: _pages[page],
+        bottomNavigationBar: BottomNavigationBar(
+          onTap: (int index) => setState(() => page = index),
+          currentIndex: page,
+          items: const [
+            BottomNavigationBarItem(label: 'Tango', icon: Icon(Icons.style)),
+            BottomNavigationBarItem(label: 'Kanji', icon: Text('漢字')),
+          ],
         ),
       );
-
-  @override
-  Widget build(BuildContext context) {
-    return FutureBuilder(
-      future: tangocardFilePaths,
-      builder: (context, snapshot) {
-        if (snapshot.hasError) {
-          debugPrint(snapshot.error.toString());
-          return const ErrorScreen();
-        } else if (!snapshot.hasData) {
-          return const LoadingScreen();
-        }
-
-        return ListView(
-          children: (snapshot.data as Map<File, List<YokutangoEntry>>)
-              .entries
-              .map(
-                (e) => ListTile(
-                  title: Text(
-                      "${e.key.uri.pathSegments.last} - ${e.value.length} cards"),
-                  onTap: () => Navigator.pushNamed(context, '/tangolist',
-                      arguments: e.key),
-                ),
-              )
-              .toList(),
-        );
-      },
-    );
-  }
 }
diff --git a/lib/screens/error.dart b/lib/screens/misc/error.dart
similarity index 100%
rename from lib/screens/error.dart
rename to lib/screens/misc/error.dart
diff --git a/lib/screens/loading.dart b/lib/screens/misc/loading.dart
similarity index 100%
rename from lib/screens/loading.dart
rename to lib/screens/misc/loading.dart
diff --git a/lib/screens/tango_list.dart b/lib/screens/pages/kanji_list.dart
similarity index 77%
rename from lib/screens/tango_list.dart
rename to lib/screens/pages/kanji_list.dart
index 53852fa..5017573 100644
--- a/lib/screens/tango_list.dart
+++ b/lib/screens/pages/kanji_list.dart
@@ -1,24 +1,23 @@
 import 'dart:convert';
 import 'dart:io';
 
-import 'package:tangocard_reader/models/router_args.dart';
-import 'package:tangocard_reader/models/yokutango_entry.dart';
-import 'package:tangocard_reader/screens/error.dart';
-import 'package:tangocard_reader/screens/loading.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
+import 'package:tangocard_reader/models/data_entry.dart';
+import 'package:tangocard_reader/models/router_args.dart';
+import 'package:tangocard_reader/screens/misc/error.dart';
+import 'package:tangocard_reader/screens/misc/loading.dart';
 
-class TangoList extends StatelessWidget {
+class KanjiList extends StatelessWidget {
   final File file;
 
-  const TangoList({
-    required this.file,
+  const KanjiList({
     Key? key,
+    required this.file,
   }) : super(key: key);
 
   @override
-  Widget build(BuildContext context) {
-    return Scaffold(
+  Widget build(BuildContext context) => Scaffold(
       appBar: AppBar(
         title: Text(file.uri.pathSegments.last),
       ),
@@ -33,7 +32,7 @@ class TangoList extends StatelessWidget {
           }
 
           final entries = (jsonSnapshot.data as List)
-              .map((e) => YokutangoEntry.fromJson(e))
+              .map((e) => KanjiEntry.fromJson(e))
               .toList();
 
           return ListView(
@@ -44,7 +43,7 @@ class TangoList extends StatelessWidget {
                     i,
                     ListTile(
                       title: Text(e.toString()),
-                      onTap: () => Navigator.pushNamed(context, '/benkyou',
+                      onTap: () => Navigator.pushNamed(context, '/benkyou/kanji',
                           arguments: BenkyouArgs(cards: entries, index: i)),
                     ),
                   ),
@@ -53,7 +52,7 @@ class TangoList extends StatelessWidget {
                 .toList(),
           );
         },
-      ),
+      )
     );
-  }
+
 }
diff --git a/lib/screens/pages/tango_list.dart b/lib/screens/pages/tango_list.dart
new file mode 100644
index 0000000..fbf5978
--- /dev/null
+++ b/lib/screens/pages/tango_list.dart
@@ -0,0 +1,61 @@
+import 'dart:convert';
+import 'dart:io';
+
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
+import 'package:tangocard_reader/models/data_entry.dart';
+import 'package:tangocard_reader/models/router_args.dart';
+import 'package:tangocard_reader/screens/misc/error.dart';
+import 'package:tangocard_reader/screens/misc/loading.dart';
+
+class TangoList extends StatelessWidget {
+  final File file;
+
+  const TangoList({
+    required this.file,
+    Key? key,
+  }) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+        appBar: AppBar(
+          title: Text(file.uri.pathSegments.last),
+        ),
+        body: FutureBuilder(
+          future:
+              rootBundle.loadString(file.path).then((data) => jsonDecode(data)),
+          builder: (context, jsonSnapshot) {
+            if (jsonSnapshot.hasError) {
+              return const ErrorScreen();
+            } else if (!jsonSnapshot.hasData) {
+              return const LoadingScreen();
+            }
+
+            final entries = (jsonSnapshot.data as List)
+                .map((e) => YokutangoEntry.fromJson(e))
+                .toList();
+
+            return ListView(
+              children: entries
+                  .asMap()
+                  .map(
+                    (i, e) => MapEntry(
+                      i,
+                      ListTile(
+                        title: Text(e.toString()),
+                        onTap: () => Navigator.pushNamed(
+                          context,
+                          '/benkyou/tango',
+                          arguments: BenkyouArgs(cards: entries, index: i),
+                        ),
+                      ),
+                    ),
+                  )
+                  .values
+                  .toList(),
+            );
+          },
+        ));
+  }
+}
diff --git a/lib/screens/pages/tango_set_list.dart b/lib/screens/pages/tango_set_list.dart
new file mode 100644
index 0000000..3a7625f
--- /dev/null
+++ b/lib/screens/pages/tango_set_list.dart
@@ -0,0 +1,46 @@
+import 'dart:io';
+
+import 'package:flutter/material.dart';
+import 'package:tangocard_reader/screens/misc/error.dart';
+import 'package:tangocard_reader/screens/misc/loading.dart';
+
+class TangoSetList extends StatelessWidget {
+  final String route;
+  final Future<Map<File, List>> files;
+
+  const TangoSetList({
+    Key? key,
+    required this.route,
+    required this.files,
+  }) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) => FutureBuilder(
+        future: files,
+        builder: (context, snapshot) {
+          if (snapshot.hasError) {
+            debugPrint(snapshot.error.toString());
+            return const ErrorScreen();
+          } else if (!snapshot.hasData) {
+            return const LoadingScreen();
+          }
+
+          return ListView(
+            children: (snapshot.data as Map<File, List>)
+                .entries
+                .map(
+                  (e) => ListTile(
+                    title: Text(
+                        "${e.key.uri.pathSegments.last} - ${e.value.length} cards"),
+                    onTap: () => Navigator.pushNamed(
+                      context,
+                      route,
+                      arguments: e.key,
+                    ),
+                  ),
+                )
+                .toList(),
+          );
+        },
+      );
+}
diff --git a/lib/screens/flashcard.dart b/lib/screens/practise/flashcard.dart
similarity index 98%
rename from lib/screens/flashcard.dart
rename to lib/screens/practise/flashcard.dart
index 5d7c4e0..04f133e 100644
--- a/lib/screens/flashcard.dart
+++ b/lib/screens/practise/flashcard.dart
@@ -1,9 +1,9 @@
 import 'dart:math';
 
 import 'package:tangocard_reader/components/flashcard.dart';
-import 'package:tangocard_reader/models/yokutango_entry.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
+import 'package:tangocard_reader/models/data_entry.dart';
 
 class FlashcardView extends StatefulWidget {
   final List<YokutangoEntry> cards;
diff --git a/lib/service/tangocard_files.dart b/lib/service/tangocard_files.dart
new file mode 100644
index 0000000..976979b
--- /dev/null
+++ b/lib/service/tangocard_files.dart
@@ -0,0 +1,50 @@
+import 'dart:convert';
+import 'dart:io';
+
+import 'package:flutter/services.dart';
+import 'package:tangocard_reader/models/data_entry.dart';
+
+// TODO: merge
+
+Future<Map<File, List<YokutangoEntry>>> get tangocardFilePaths => rootBundle
+    .loadString('AssetManifest.json')
+    .then(
+      (json) => jsonDecode(json)
+          .keys
+          .where((String key) =>
+              key.contains('yokutango/json/') && key.contains('.json'))
+          .toList(),
+    )
+    .then(
+      (l) async => Map.fromIterables(
+        l.map<File>((f) => File(f)),
+        await Future.wait<List<YokutangoEntry>>(
+            l.map<Future<List<YokutangoEntry>>>(
+          (String t) => rootBundle.loadString(t).then<List<YokutangoEntry>>(
+              (s) => jsonDecode(s)
+                  .map<YokutangoEntry>((e) => YokutangoEntry.fromJson(e))
+                  .toList()),
+        )),
+      ),
+    );
+
+Future<Map<File, List<KanjiEntry>>> get kanjicardFilePaths => rootBundle
+    .loadString('AssetManifest.json')
+    .then(
+      (json) => jsonDecode(json)
+          .keys
+          .where((String key) =>
+              key.contains(RegExp(r'yokutango/kanji/kanji_\d+.json')))
+          .toList(),
+    )
+    .then(
+      (l) async => Map.fromIterables(
+        l.map<File>((f) => File(f)),
+        await Future.wait<List<KanjiEntry>>(l.map<Future<List<KanjiEntry>>>(
+          (String t) => rootBundle.loadString(t).then<List<KanjiEntry>>((s) =>
+              jsonDecode(s)
+                  .map<KanjiEntry>((e) => KanjiEntry.fromJson(e))
+                  .toList()),
+        )),
+      ),
+    );
diff --git a/pubspec.lock b/pubspec.lock
index 53c104c..6b0c5a7 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -176,7 +176,7 @@ packages:
       name: vector_math
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.0"
+    version: "2.1.1"
 sdks:
-  dart: ">=2.12.0 <3.0.0"
+  dart: ">=2.14.0 <3.0.0"
   flutter: ">=1.16.0"