Man, Zero Film is such an underrated gem! While I couldn't find a definitive director credited (it's one of those experimental projects that sometimes blur authorship), the style reminds me so much of early 2000s avant-garde anime shorts. The raw, frenetic energy feels like it could've been a collaborative effort—maybe even a passion project by a group of indie animators.
I stumbled upon it years ago during a deep dive into abstract animation, and what stuck with me was how it plays with light and shadow almost like 'Tekkonkinkreet,' but way more chaotic. If anyone has concrete info about the creators, I'd love to geek out about it! Until then, I'll keep theorizing it was some reclusive genius working under a pseudonym.