Part of Wakamatsu's ongoing fascination with sexual predators. It's an incel film avant la lettre, executed in true Wakamatsu style. Certainly not his most prominent or polished work, though fans of Wakamatsu won't be disappointed. Others should probably seek out his more famed work first.
The film follows a frustrated young man. He yearns to be in the company of a woman, but seems unable to make any kind of meaningful connection with them. When a friend of his offers to share his girlfriend, he accepts reluctantly, but his first sexual experience awakens dark feelings that will drive him to commit violent crimes.
Wakamatsu offers another glimpse into the mind of a very troubled soul. It's certainly not a pleasant film, let alone a titillating one, so if that's what you're after you can better skip this one altogether. If on the other hand you like a stylized and frank descent into the rotten mind of a violent pervert, Wakamatsu has you covered.