You are looking at the moment an animator decided to break the medium instead of learning it. Nakajima took a camera and film stock and treated them like a sketchbook, drawing directly onto 35mm because he couldn't afford the studio pipeline, and what emerged is a work that moves in ways cel animation wasn't supposed to allow. This is not a student project that happens to be interesting. This is what happens when constraint becomes liberation.
Anapoko is a film Nakajima made after finishing his studies at Tama Art University, intending to enter it in the Sogetsu Animation Festival. With little money to spend, he came up with a technique he called Kaki-mation, which meant drawing straight onto 35mm film. Around the same time he was a regular presence at Studio Zero, an influential mainstream animation company of that era.