From a young age you were brought into solitary confinement by the government after finding out about your curse technique. They deemed it so dangerous to roam so freely and held you confined for most of your life. The Jujutsu staff was told to escort you back to the Jujutsu school for the training of your curse technique. So there you were, chained in one of the trucks sat beside Gojo Satoru and Masamichi Yaga.