diff --git a/config.py b/config.py
new file mode 100644
index 0000000..cc1936c
--- /dev/null
+++ b/config.py
@@ -0,0 +1,38 @@
+from __future__ import annotations
+
+import os
+from typing import TypedDict
+
+from eloquent import DatabaseManager, Model  # type: ignore
+
+CONFIG: DBConfig = { 'default': 'nico', 'connections': {
+        'ai':   { 'driver':    'mysql',
+                  'host':      'localhost',
+                  'database':  'nizika_ai',
+                  'user':      os.environ['MYSQL_USER'],
+                  'password':  os.environ['MYSQL_PASS'],
+                  'prefix':    '' },
+
+        'nico': { 'driver':    'mysql',
+                  'host':      'localhost',
+                  'database':  'nizika_nico',
+                  'user':      os.environ['MYSQL_USER'],
+                  'password':  os.environ['MYSQL_PASS'],
+                  'prefix':    '' } } }
+
+DB = DatabaseManager (CONFIG)
+Model.set_connection_resolver (DB)
+
+
+class DBConfig (TypedDict):
+    default:        str
+    connections:    dict[str, DBConnection]
+
+
+class DBConnection (TypedDict):
+    driver:     str
+    host:       str
+    database:   str
+    user:       str
+    password:   str
+    prefix:     str
diff --git a/main.py b/main.py
index 4ba1919..66fbda9 100644
--- a/main.py
+++ b/main.py
@@ -12,13 +12,18 @@ from typing import cast
 
 import nicolib
 import queries_to_answers as q2a
-from db.config import DB as NicoDB
+from config import DB
 from db.models import Comment, Video, VideoHistory
 from nicolib import VideoInfo
-from nizika_ai.config import DB as AIDB
 from nizika_ai.consts import Character, GPTModel, QueryType
 from nizika_ai.models import Query
 
+# DB 設定
+DB
+for m in (Comment, Video, VideoHistory):
+    m.__connection__ = 'nico'
+Query.__connection__ = 'ai'
+
 KIRIBAN_VIEWS_COUNTS: list[int] = sorted ({ *range (1_000, 10_000, 1_000),
                                             *range (10_000, 1_000_001, 10_000),
                                             114_514, 1_940, 2_450, 5_100,
@@ -39,10 +44,6 @@ async def main (
     メーン処理
     """
 
-    # DB 準備
-    NicoDB
-    AIDB
-
     await asyncio.gather (
             queries_to_answers (),
             report_kiriban (),