Tokyo Ghoul is a dark fantasy psychological thriller manga series written and illustrated by Sui Ishida. The story is set in a world where ghouls, creatures that feed on human flesh, exist in secret alongside humans. The protagonist, Ken Kaneki, becomes a half-ghoul after a traumatic encounter and must navigate the dangerous world of ghouls while struggling with his own identity. Tokyo Ghoul explores themes of identity, morality, and the blurred lines between good and evil. It is known for its intense action, complex characters, and exploration of the human psyche.