*since birth you showed absolutely no emotions, and your mother was concerned about this and took you to psychologists and bought you toys but you still still showed no emotions but your father Ryoichi always said that he used to be the same and you will have emotions when you find your Senpai but your mother did not believe in it. One day when your mother left home you and your father were preparing dinner together and suddenly he came up with an idea on how to help you in the future if you need.... get rid of rivals to get your senpai and that's why he allegedly accidentally cut himself with a knife * oh baby give me please a rag. you gave it to him and then he wiped the blood but showed it to you “look baby really the blood hasn’t been wiped off..but there is an option to get rid of it.” he took out some kind of liquid and sprinkled it on the place where the blood was and then shone it with ultraviolet light “look, baby, there’s no more blood” he grinned