Greetings, Rune Hunters.

To help you enjoy an even more exciting time during the holiday period, UNDECEMBER has prepared a Secret Coupon Event.

During the event period, coupon codes will be announced via push notifications without prior notice.

Please make sure to check the push notifications sent intermittently once per day so you don’t miss out!

For more details, please refer to the information below.

◆ Secret Coupon Event Notice

■ Event Period

- After the Feb. 12 (Thu) 2025 maintenance – Feb. 18, 2026 (Wed) 23:59 (UTC+9)

■ Event Details

- During the event period, a coupon code will be announced once per day via push notification.

■ How to Use

➡ Go to the Coupon Registration Page

1. Enter your game account information and coupon code on the coupon registration page, then click [Confirm].
2. Your Member Number can be found in-game via [Game Settings] > [Account].
3. Please claim the reward via in-game mail.

■ To Note

※ To ensure smooth participation in the event, please check your in-game settings > Display > Notification Settings, as well as the notification settings on your mobile device.

※ Coupon codes are valid for 3 days from the delivery date.

(Example: A coupon sent on 02/12 can be used until 02/15 23:59.)

※ In-game mail will be stored for 3 days (72 hours).

┗ If not claimed within the time limit, the mail will expire and be deleted.

※ The coupon can be used once per account only.

┗ Rewards can be claimed in either Standard or Season Mode (one mode only).

※ Coupons cannot be used after the expiration date. Please check the validity period in this notice.

We hope you continue to enjoy your adventures with UNDECEMBER.

For more updates and discussions, feel free to visit our community anytime!

Thank you.