ＳＭ　刺青本番 (1984)

Original title: SM 刺青本番

Asuka, a wanderer with a magnificent tattoo on his back, incurs the wrath of the Bombers, a motorcycle gang in a port town, and is taken to their hideout along with Akiko, the bar owner where they are staying, where they are beaten up and raped. Nana asks for help from Saeki, who has returned to the town for the first time in five years. Saeki, who loves Akiko, who is now married to Shunsuke, breaks into the hideout and rescues the two. A passionate love burns between Akiko and Saeki, but Saeki coldly brushes her off and sets off on a journey. Asuka also gives up on the town and boards a train aimlessly, but...