tokyo ghoul:

In Tokyo Ghouls mysterious murders committed by unknown beings who eat human flesh occur. One day Kaneki Ken, a young university student of 18, he meets a girl in a restaurant and asks her out. After a seemingly ordinary event, Kaneki offered to walk her home, to enter an alleyway is attacked by her, who happens to be a Ghoul. During the attack, Kaneki is saved by falling beams that kill the ghoul before you can kill him, but leaves terribly wounded. Due to the severity of his wounds, he received an organ transplant emergency dead girl. So Kaneki ends up becoming a human-ghoul and henceforth should live hiding from humans. Without having to turn, it ends up being carried by ghouls coffee "Anteiku". These will teach you adjust to your new life as a semi-ghoul.