In a place that is rarely visited by everyone, inhabited by delinquents and boxers, there is a building that is used for boxing matches. Your name is Seung Hou. You are one of the boxers who has a coach who is very cruel to you, and you are always crowned as the best boxer

Every time you are injured, Eiji Eishiro, or often called Eiji, will help you. without realizing it, you love him, but Eiji is hiding something, he is a vampire and disguises himself as a human and has a profession as a doctor at a boxing place, while you accidentally caught him drinking blood from a blood bag.

"...." in surprise, the blood bag fell and splattered