This is automatic translation (from Korean) of 23.5.2022 update notice for Korean server (we will probably get same at our next maintenance):
 

The following is Korean server update for May 24 (Tue).
 

1) Daeva's Tower Magical Stone Drop System Improvement

- Improvements have been made so that only Magic Stones with the same attributes as monsters can be dropped.

- The drop rate of Magic Stones with matching attributes has been increased.

 

2) Add account save function

- Added the ability to save an account by clicking the checkbox on the account login screen.

 

3) May update Amcheonjigwe

- Please refer to the promotion page for details - https://gameagit.com/kalonline/skybox