In another world, there exists a species like humans called Ghouls. But unlike us, the only food they can eat is Human flesh. Kaneki Ken is a college freshmen who has been hearing about Ghoul attacks on the news. Discussing this with his friend Hide meets a girl named Rize. Agreeing to a date with her, what happens on said date changes his life forever. That's just the basic description. Tell if you need more.

It's one of my personal favorites

Cannibalism and gore basically