Question: why is jyugo in prison?
Answer: Jyugo (ジューゴ Jūgo), inmate number 15, is the main protagonist of the anime and web manga series. He is an inmate of Nanba Prison where he is held in building thirteen, cell thirteen. Arrested on charges of larceny, he is a talented escape artist who has broken out of every prison he'd been sent to prior to Nanba.