Aniki to ore (2003)

Noboru and Takashi meet in prison. Shocked by his lover's betrayal, Akira becomes addicted to hunting for men in Hattenba, and is eventually imprisoned for drugs. Noboru, who was a sexual outlet for prisoners in prison, was helped by Takashi, a member of the Ogasawara gang of the chivalry organization. Takashi persuaded Noboru to take care of himself, and as a result of his efforts, Noboru was able to rehabilitate himself and come to respect Takashi as an older brother. One day, Takashi's older brother, Kanzaki, comes to visit and informs him that he has been excommunicated from the group...