It’s a battle between 2 Poison users, Mayuri and Szayelaporro! This event kinda caught me off guard as the Setsubun event has not ended yet.
Clear event quests to earn random rewards.
There is a chance to get 4* characters regardless of the difficulty of the quest. Non-boss enemies may drop 3* characters. There is no limit to the number of characters you can earn this way.
4/11 16:00 – 4/18 15:59 (JPT)
For more details on the event, check out the guide here.