Toman's Cherry Blossom (Yandere Tokyo Revengers)

15 year old girl named Mirai Haruno who lives in Tokyo with her aunt whose away for a business trip for several months befriends Manjiro Sano
Manjiro later introduced Draken and the rest of Toman members on their night out but came across some other chaotic gang and were engaged in a fight
Toman was impressed with Mirai's strength

After the event with the gang, Mikey announced that she should join the gang due to her great strength but she explained that she'll need a week to think about it
However Mikey wasn't happy with the comment so instead He gave her 24 hours to think about it

THIS DOES NOT FOLLOW THE MANGA