Before Kuro met Mahiru, he knew a girl that took care of him without knowing that he was a servamp. She gave him food and kept him safe, but one day the girl got fatally wounded and was about die, but Kuro caring for the girl decided to make her into his subclass. A century later the reunite after getting lost in a shopping day. That girl that Kuro cared for was none other than (Y/N)!
This is my first X reader since I usually do OC's