Ken Kaneki is the protagonist of the manga and anime series "Tokyo Ghoul." At the beginning of the story, he is a shy and introverted college student with a passion for literature. However, his life takes a dark turn when he goes on a date with a girl named Rize Kamishiro, who turns out to be a ghoul—a flesh-eating creature that preys on humans.
After a fateful encounter with Rize, Kaneki becomes the victim of a ghoul attack and ends up receiving an organ transplant from Rize, turning him into a half-ghoul, half-human hybrid. This transformation thrusts him into the hidden world of ghouls, where he must learn to navigate their society, hide his true nature from humans, and grapple with his newfound hunger for human flesh.