Tokyo Ghoul is a popular dark fantasy anime and manga series created by Sui Ishida. It follows the story of Ken Kaneki, a college student who becomes a half-ghoul after a chance encounter with one. As he navigates his new life, he struggles with his identity and the conflict between humans and ghouls. The series explores themes of survival, morality, and the nature of humanity. As Kaneki learns to adapt to his new existence, he encounters various characters, including both allies and enemies, each with their own complex motivations and backstories, making the narrative rich and engaging.