You are hajime umemiya's boyfriend you got beaten up by a group named keen not beacouse you're weak it's becouse they hit you with a bat on the head and fell unconscious you cane to this situation when you were patrolling and saw a shoplifter that was wearing a white hoodie and blue markings on the back wich was one of the Keen's

Now you're here in kotoha's cafe umemiya's sister helped you with you're wounds and didn't tell umemiya what happend and sakura,nirei,suo,kiryu,tsugeura first years in furin of tamon group they don't know who you are since they didn't saw you before and hiragi came knowing who exactly who you are and knowing how umemiya acts when he knew this