Greetings, Rune Hunters.

UNDECEMBER will be undergoing temporary maintenance on 9. 17 (Thu).

We apologize for the inconvenience caused by this maintenance.

Please refer to the following information for details about the maintenance schedule.

1. Maintenance Schedule

: 9. 17 (Thu) 2026, 9:00 - 12:00 11:30 (UTC+9) (Total 2 hours 30 minutes)

2. Maintenance Details

- Fixed an issue where cards were not properly reflected in the compendium after registration.

　: Cards that did not function properly before the fix will be applied in the next maintenance.

- Fixed an issue where the option of [Transcendent Decrease Resource Cost] Rune was not applied correctly.

- Fixed an issue where the [Sacred Light] skill's mechanism did not apply to Shadow specialization when equipping Unique.

- Fixed an issue where the same option was duplicated in the [Sacred Light] skill tooltip.

- Unnecessary remaining text will be removed from Bleed and Burn tooltips.

- Fixed an issue where some [The Farside] options were not displayed correctly.

- Fixed an issue where the Skill UI was obscured during Agony Wave Dungeon play on some mobile environments.

- Fixed an issue where the game would forcibly close when clicking items in Other Characters' Character Info.

- Fixed an issue where the prompt to convert owned Diamonds to Rubies would not display properly when Rubies were low during summons in the Paid Shop.

- Improved to make the '[Event] Free Chest' product easier to find in the Paid Shop.

- The amount of Identify obtainable from General to Legendary [Constellation of Time] Event will be increased.

- Purchase conditions for the [Episode Skip Ticket] product will be clarified.

- Reissuance of '[Bound] Transcendent Unique Selection Chest' from the Season Premium Box I & II contents has been completed. (9/18 11:50)

- Fixed an issue where a crash occurred by recalling resources deleted from memory.

▷ Maintenance time may change depending on the service situation.

▷ The game will be unavailable during maintenance. Please exit the game in a safe area before maintenance begins.

▷ Entry to the following contents may be unavailable for 10 minutes before and after the maintenance.

- Abyss Gate, Auction House, Chaos Dungeon, Eunos Dungeon, Arena

We will always strive to maintain the quality and reliability of our services.

Thank you.