Tokyo Ghoul(東京喰種トーキョーグール)

"Tokyo Ghouls" takes place in an alternate reality where ghouls -- creatures resembling human beings who survive on human flesh -- live covertly amongst the human population. After barely surviving a date with a girl who ended up being a ghoul, Ken Kaneki awakens in the hospital to find he has become a half-ghoul himself and must figure out how to navigate his new life.