This is automatic translation (from Korean) of 3.5.2021 update notice for Korean server (we will probably get same at our next maintenance):

Good morning. This is Cal Online.
The following is the update on 4.5.2021 (Tue).

1) Quest item drop rate adjustment

-Increases the probability of dropping the wolf boss supply, the Mad Maguni Labor Department leader supply, and the boss Daeva's guard supply supply drop.


2) Quest reward correction

-Modified so that you can select Bihondo, the reward for the strong disturbance quest..


3) Infinite Tower 11F monster modification

-An error where the monster on the 11th floor of the Infinite Tower was regenerated at an abnormal location has been fixed.


4) Siege buff stage improvement

-Corrects the siege buff level and makes it more clear.


5) Login screen improvement

-The login screen and character selection window have been improved.