Tokyo Ghoul: Jail is a manga series set in the same universe as Tokyo Ghoul, created by Sui Ishida. The story follows Haise Sasaki, a half-human, half-ghoul investigator, as he navigates the complexities of his identity while working for the Commission of Counter Ghoul. In this narrative, Haise is imprisoned in a facility designed to contain ghouls. He faces various challenges, including encounters with other ghouls and the psychological struggles of his dual nature. The series explores themes of identity, morality, and the conflict between humans and ghouls.