Twice during this Ninja Tower event, i noticed that the Oni Curse was given to the character, even when I successfully removed the affected curse gem. Both of these times, the cursed Oni gem was removed by using the Diamond gem (what you receive when you match 5 gems of the same color) on the last round (when the count was down to 1).
- 1st time (4/1/21): Sartana affected (Level 80)
- 2nd time (4/3/22, 8:45am EST): Joon Costume affected (Level 80, Ascension 20)