Fetist (The)

Slightly strange Sato entry from 1998 revising the gay pinku (a broad cinematic term used to categorize a wide variety of Japanese films with adult content) once again.

A young man in a somewhat abusive gay relationship slowly loses his mind and becomes a serial killer, slashing random people in the streets.

There's a next-door neighbor obsessed with capturing sounds and eavesdropping, another neighbor who has an S&M relationship with a girl that seems to unsettle and trigger violent and confusing thoughts in the young man, and there's a gay painter who becomes obsessed with the young man. Violence escalates and becomes chaotic, but none of their behavior makes any sense.

Trailer...