diff --git a/app/controllers/subjects_controller.ts b/app/controllers/subjects_controller.ts
new file mode 100644
index 0000000..cc61a96
--- /dev/null
+++ b/app/controllers/subjects_controller.ts
@@ -0,0 +1,17 @@
+import type { HttpContext } from '@adonisjs/core/http'
+import { inject } from '@adonisjs/core'
+import { SubjectService } from '#services/subject_service'
+
+@inject()
+export default class SubjectsController {
+  constructor(private subjectService: SubjectService) {}
+
+  // GET /subjects
+  async index({ auth }: HttpContext) {
+    const data = await this.subjectService.getAll(auth.user!.className)
+    return {
+      success: true,
+      data,
+    }
+  }
+}
diff --git a/app/controllers/user_controller.ts b/app/controllers/user_controller.ts
index d92b1da..244a17d 100644
--- a/app/controllers/user_controller.ts
+++ b/app/controllers/user_controller.ts
@@ -1,9 +1,12 @@
-import User from '#models/user'
-import { createUserValidator } from '#validators/user'
+import { SubjectService } from '#services/subject_service'
+import { updateUserValidator } from '#validators/user'
+import { inject } from '@adonisjs/core'
 import type { HttpContext } from '@adonisjs/core/http'
-import { cuid } from '@adonisjs/core/helpers'
 
+@inject()
 export default class UserController {
+  constructor(private subjectService: SubjectService) {}
+
   // GET /users/@me
   async me({ auth }: HttpContext) {
     return {
@@ -12,17 +15,40 @@ export default class UserController {
     }
   }
 
-  // POST /users
-  async create({ request }: HttpContext) {
-    const payload = await request.validateUsing(createUserValidator)
-    // Save avatar
-    const avatar = `avatars/${cuid()}.${payload.avatar.extname}`
-    await payload.avatar.moveToDisk(avatar)
-    // const avatar = await drive.use().getSignedUrl(key)
-    return User.create({
-      ...payload,
-      // TODO: No avatar for now!!
-      // avatar,
-    })
+  // POST /users/@me
+  // Update user preferences (for subjects)
+  async update({ request, response, auth }: HttpContext) {
+    const user = auth.user!
+    const { preferences: data } = await request.validateUsing(updateUserValidator)
+    const preferences = user.extras?.preferences || []
+
+    // Validate subject names
+    const validSubjects = await this.subjectService.getAll(user.className)
+    for (const { name, emoji, color } of data) {
+      if (!validSubjects.includes(name)) {
+        return response.badRequest({
+          message: `Invalid subject name: ${name}`,
+        })
+      }
+      const existing = preferences.find((p: any) => p.name === name)
+      if (existing) {
+        // Update
+        existing.emoji = emoji
+        existing.color = color
+      } else {
+        // Create new preference
+        preferences.push({ name, emoji, color })
+      }
+    }
+
+    user.extras = {
+      ...user.extras,
+      preferences,
+    }
+    await user.save()
+    return {
+      success: true,
+      data: user,
+    }
   }
 }
diff --git a/app/models/user.ts b/app/models/user.ts
index d6146da..403f8f7 100644
--- a/app/models/user.ts
+++ b/app/models/user.ts
@@ -11,10 +11,10 @@ export default class User extends BaseModel {
   @column()
   declare className: string
 
-  @column({ serializeAs: null})
+  @column({ serializeAs: null })
   declare firstName: string
 
-  @column({ serializeAs: null})
+  @column({ serializeAs: null })
   declare lastName: string
 
   @computed()
@@ -25,6 +25,14 @@ export default class User extends BaseModel {
   @column({ serializeAs: null })
   declare email: string
 
+  @column({ serializeAs: null })
+  declare extras: Record<string, any>
+
+  @computed()
+  get preferences(): { name: string; emoji: string; color: string }[] {
+    return this.extras?.preferences || []
+  }
+
   @column.dateTime({ autoCreate: true })
   declare createdAt: DateTime
 
diff --git a/app/services/subject_service.ts b/app/services/subject_service.ts
new file mode 100644
index 0000000..8b54320
--- /dev/null
+++ b/app/services/subject_service.ts
@@ -0,0 +1,18 @@
+import Colle from '#models/colle'
+import Subject from '#models/subject'
+
+export class SubjectService {
+  async getAll(className: string): Promise<string[]> {
+    const subjectsIds = (
+      await Colle.query()
+        .distinct('subjectId')
+        .select('subjectId')
+        .whereHas('student', (query) => {
+          query.where('className', className)
+        })
+    ).map((colle) => colle.subjectId)
+
+    const subjects = await Subject.query().whereIn('id', subjectsIds).select('name')
+    return subjects.map((subject) => subject.name)
+  }
+}
diff --git a/app/validators/user.ts b/app/validators/user.ts
index 9504d9a..7b64edf 100644
--- a/app/validators/user.ts
+++ b/app/validators/user.ts
@@ -1,10 +1,13 @@
 import vine from '@vinejs/vine'
 
-export const createUserValidator = vine.compile(
+export const updateUserValidator = vine.compile(
   vine.object({
-    firstName: vine.string().minLength(2).maxLength(50),
-    lastName: vine.string().minLength(2).maxLength(50),
-    className: vine.string().minLength(2).maxLength(10),
-    avatar: vine.file(),
+    preferences: vine.array(
+      vine.object({
+        name: vine.string(),
+        emoji: vine.string().maxLength(12),
+        color: vine.string().maxLength(12),
+      })
+    ),
   })
 )
diff --git a/database/migrations/1755608664070_create_user_extras_table.ts b/database/migrations/1755608664070_create_user_extras_table.ts
new file mode 100644
index 0000000..44e9a6b
--- /dev/null
+++ b/database/migrations/1755608664070_create_user_extras_table.ts
@@ -0,0 +1,18 @@
+import { BaseSchema } from '@adonisjs/lucid/schema'
+
+export default class extends BaseSchema {
+  protected tableName = 'users'
+
+  async up() {
+    this.schema.alterTable(this.tableName, (table) => {
+      // Adding a JSON column for extras (can hold flexible data)
+      table.jsonb('extras').nullable().after('updated_at')
+    })
+  }
+
+  async down() {
+    this.schema.alterTable(this.tableName, (table) => {
+      table.dropColumn('extras')
+    })
+  }
+}
diff --git a/start/routes.ts b/start/routes.ts
index 81e0e3f..ad2442b 100644
--- a/start/routes.ts
+++ b/start/routes.ts
@@ -8,12 +8,13 @@
 */
 
 import router from '@adonisjs/core/services/router'
-import transmit from '@adonisjs/transmit/services/main'
+// import transmit from '@adonisjs/transmit/services/main'
 import { authThrottle } from './limiters.js'
 import { throttle } from './limiter.js'
 import { middleware } from './kernel.js'
 
-transmit.registerRoutes()
+// TODO: Magic link login
+// transmit.registerRoutes()
 
 const AuthController = () => import('#controllers/auth_controller')
 
@@ -29,8 +30,11 @@ router.group(() => {
 })
 
 const UserController = () => import('#controllers/user_controller')
-
 router.get('/users/@me', [UserController, 'me']).use(middleware.auth())
+router.post('/users/@me', [UserController, 'update']).use(middleware.auth())
+
+const SubjectsController = () => import('#controllers/subjects_controller')
+router.get('/subjects', [SubjectsController, 'index']).use(middleware.auth())
 
 // TEST ROUTE
 import redis from '@adonisjs/redis/services/main'
@@ -38,7 +42,8 @@ import redis from '@adonisjs/redis/services/main'
 router.get('/', async () => {
   await redis.publish("jobs_queue", JSON.stringify({
     type: 1,
-    date: "09/12/2024"
+    date: "20/09/2019",
+    class_name: "MPSI 2",
   }))
   return { message: 'Hello, world!' }
 })
@@ -51,8 +56,5 @@ router.group(() => {
   router.post('/upcoming', [CollesController, 'createUpcoming'])
   router.get('/', [CollesController, 'index']).use(middleware.auth())
   router.get('/:colleId', [CollesController, 'show']).use(middleware.auth())
-  // router.get('/colles/:id', 'CollesController.show')
-  // router.put('/colles/:id', 'CollesController.update')
-  // router.delete('/colles/:id', 'CollesController.delete')
 }
 ).prefix('/colles')