diff --git a/packages/backend/src/lib/logger.ts b/packages/backend/src/lib/logger.ts
index 2ed1d93..cd1f1af 100755
--- a/packages/backend/src/lib/logger.ts
+++ b/packages/backend/src/lib/logger.ts
@@ -1,6 +1,8 @@
 import { appendFileSync } from "node:fs";
 import { EOL } from "node:os";
 
+const TYPE_MAX_LENGTH = 5;
+
 const createLog = (
   nativeLogger: (...args: any[]) => void,
   type: string,
@@ -11,7 +13,9 @@ const createLog = (
     args = args[0];
   }
 
-  const content = `${new Date().toLocaleString()} ${type} [${location}] ${args.join("\n").replaceAll("\n", "\n  ")}`;
+  const spacesForFlat = " ".repeat(TYPE_MAX_LENGTH - type.length);
+
+  const content = `${new Date().toLocaleString()} ${type}${spacesForFlat} [${location}] ${args.join("\n").replaceAll("\n", "\n  ")}`;
 
   nativeLogger(content);
  
diff --git a/packages/backend/src/modules/entities/Config.ts b/packages/backend/src/modules/entities/Config.ts
index 760a05a..a62e370 100644
--- a/packages/backend/src/modules/entities/Config.ts
+++ b/packages/backend/src/modules/entities/Config.ts
@@ -1,5 +1,5 @@
 import { Entity, EntityRepositoryType, PrimaryKey, Property } from "@mikro-orm/core";
-import { ConfigRepository } from "../repositories/Config";
+import { ConfigRepository } from "@/modules/repositories/Config";
 
 @Entity({
   tableName: "config",
diff --git a/packages/backend/src/modules/entities/Token.ts b/packages/backend/src/modules/entities/Token.ts
index 60b8875..d50c3b8 100644
--- a/packages/backend/src/modules/entities/Token.ts
+++ b/packages/backend/src/modules/entities/Token.ts
@@ -10,7 +10,10 @@ export class TokenEntity {
   [EntityRepositoryType]?: TokenRepository;
   [OptionalProps]?: "createdAt";
 
-  @PrimaryKey({ type: "string", length: 64 })
+  @PrimaryKey({
+    type: "string",
+    length: 64,
+  })
   name!: string;
 
   @Property({ type: "text" })
@@ -20,12 +23,18 @@ export class TokenEntity {
   @Index()
   user!: UserEntity;
 
-  @Property()
+  @Property({ type: "boolean" })
   isNative!: boolean;
 
-  @Property({ onCreate: () => new Date() })
+  @Property({
+    type: "date",
+    onCreate: () => new Date(),
+  })
   createdAt!: Date;
 
-  @Property({ nullable: true })
+  @Property({
+    type: "date",
+    nullable: true,
+  })
   lastUsedAt?: Date;
 }
diff --git a/packages/backend/src/modules/entities/User.ts b/packages/backend/src/modules/entities/User.ts
index 868d84e..db8205a 100644
--- a/packages/backend/src/modules/entities/User.ts
+++ b/packages/backend/src/modules/entities/User.ts
@@ -10,27 +10,50 @@ export class UserEntity {
   [EntityRepositoryType]?: UserRepository;
   [OptionalProps]?: "uuid" | "isSuspended" | "createdAt";
 
-  @PrimaryKey({ length: 36 })
+  @PrimaryKey({
+    type: "string",
+    length: 36
+  })
   uuid: string = uuid();
 
-  @Property({ unique: true, length: 20 })
+  @Property({
+    type: "string",
+    unique: true,
+    length: 20,
+  })
   userid!: string;
 
-  @Property({ length: 30 })
+  @Property({
+    type: "string",
+    length: 30,
+  })
   username!: string;
 
-  @Property({ unique: true, length: 256 })
+  @Property({
+    type: "string",
+    unique: true,
+    length: 256,
+  })
   email!: string;
 
   @Property({ type: "text" })
   password!: string;
 
-  @Property({ default: false })
+  @Property({
+    type: "boolean",
+    default: false,
+  })
   isAdmin: boolean = false;
 
-  @Property({ default: false })
+  @Property({
+    type: "boolean",
+    default: false,
+  })
   isSuspended: boolean = false;
 
-  @Property({ onCreate: () => new Date() })
+  @Property({
+    type: "date",
+    onCreate: () => new Date(),
+  })
   createdAt!: Date;
 }
\ No newline at end of file
diff --git a/packages/backend/src/modules/repositories/Token.ts b/packages/backend/src/modules/repositories/Token.ts
index f2bdaeb..a3df749 100644
--- a/packages/backend/src/modules/repositories/Token.ts
+++ b/packages/backend/src/modules/repositories/Token.ts
@@ -4,11 +4,15 @@ import { hash, argon2id, verify as argon2Verify } from "argon2";
 import { randomBytes } from "node:crypto";
 import { UserEntity } from "@/modules/entities/User";
 import { ErrorBase } from "@/errors";
+import Logger from "@/lib/logger";
+
+const logger = new Logger("Repo | Token.ts");
 
 export class TokenRepository extends EntityRepository<TokenEntity> {
   async createToken(user: UserEntity, isNative: boolean) {
-    const name = randomBytes(32).toString("hex");
-    const passphrase = randomBytes(32).toString("hex");
+    const TOKEN_BYTES = 32;
+    const name = randomBytes(TOKEN_BYTES).toString("hex");
+    const passphrase = randomBytes(TOKEN_BYTES).toString("hex");
 
     const hashed = await hash(passphrase, {
       type: argon2id,
@@ -25,6 +29,13 @@ export class TokenRepository extends EntityRepository<TokenEntity> {
     });
 
     await this.em.persist(token).flush();
+    logger.info(
+      "Token created:",
+      `User: @${user.userid}`,
+      `Type: ${isNative
+        ? "Native"
+        : "API Token"}`
+    );
 
     return `${name}_${passphrase}`;
   }
@@ -60,8 +71,15 @@ export class TokenRepository extends EntityRepository<TokenEntity> {
         message: "トークンが不正です。",
       });
 
-		token.lastUsedAt = new Date()
+		token.lastUsedAt = new Date();
 		await this.em.persist(token).flush();
+    logger.info(
+      "Token used:",
+      `User: @${token.user.userid}`,
+      `Type: ${token.isNative
+        ? "Native"
+        : "API Token"}`
+    );
 
     return token;
   }