The main character's poster has a naked woman. Boobs can be seen.
A statue of a naked person can be seen, after the main character has walked out of a crowded train.
There are some references to dating, marriage, and sleeping with women.
A man is bathing, only his shoulders and head are seen.
Two people have sex, until one of them says she's hungry.
A man masturbates a woman, but his organ of his manhood refuses to respond to the excitement.
A man urinates.
A woman holds a dildo, and masturbates a man. The masturbation itself happens off-screen, and all we see are the upper bodies of the two people.
A man sees a graffiti of a naked woman at public toilet, and new graffitis pop up next time he gets into the same place. The latter graffitis can be seen moving as if they had come to life, and moaning can be heard clearly.
A man uses his markers to draw a naked woman on a wall, but is discovered by a woman who calls him "pervert".
In a fantasy sequence, an American soldier has sex with a Japanese woman. Near the end, the same woman presses her father into her body, leading to a rough, incestous sex.