Tokyo ghoul

Tokyo Ghoul is set in an alternate reality where ghouls, individuals who can only survive by eating human flesh, live among the normal humans in secret, hiding their true nature to evade pursuit from the authorities. Including enhanced speed, senses, and regenerative ability, a regular ghoul is several times stronger than a normal human and have at least one special predatory organ called a "Kagune", which they can manifest and use as a weapon during combat. A kagune can manifest into four forms known as Ukaku, Rinkaku, Koukaku, and Bikaku.The story follows Ken Kaneki, a college student who barely survives a deadly encounter with Rize Kamishiro, his date who reveals herself as a ghoul, he is taken to the hospital in critical condition. After recovering Kaneki discovers that he underwent a surgery that transformed him into a half-ghoul. This was accomplished because some of Rize's organs were transferred into his body, and now, like normal ghouls, he must consume human flesh to survive. The ghouls who manage the coffee shop "Anteiku" take him in and teach him to deal with his new life as a half-ghoul. Some of his daily struggles include fitting in to the ghoul society, as well as keeping his identity hidden from his human companions. One of the best anime.