Based on the manga by Satosumi Takaguchi, adapted by Midori Kogane and Hidehiro Ito, and directed by Rokuro Mochizuki, this anti-hero story follows a fallen boxer turned extortionist. Takasu Goro, once forced out of boxing by a fixed match, now runs a front as a private detective while blackmailing targets ranging from students to yakuza bosses. Feared for his ruthless methods, he’s known as “the dirty one”. His intellectually disabled sister Keiko befriends a man named Osho at her favorite riverside spot. When a yakuza executive is killed, Goro tries to extort the boss for 100 million yen—triggering Keiko’s kidnapping.

Only a fool loves their body more than their soul! Masayuki and Kyoko's bodies had both started to age to the point where they no longer experienced sexual passion. They are a couple that shares the same bed while finding separate pleasures with their own sex toys. Masayuki was always reminded that his true understanding of love came from his high school ethics teacher and that teacher's wife. The incident occurred when Masayuki was only 17. When he became alone with her he impulsively craved her body, only to notice that on the other side of the sliding paper screen...