The story of a teenage boy named Yu, who falls for Yoko, a girl he runs into while working as an "up-skirt" photographer in an offshoot of the porn industry. His attempts to woo her are complicated by a spot of cross-dressing – which convinces Yoko that she is lesbian – dalliances with kung-fu and crime, and a constant struggle with the guilt that's a legacy of his Catholic upbringing.
The high school boy and girl from Sundome 2 continue their sexless relationship in which she is sadistic and he is masochistic, but one day there is a rumour at school about her having a relationship with a different, and older, man. The boyfriend feels as if his girlfriend is hiding her relationship with the older man.