If you loved Nuigulumar Z, try Shyness Machine Girl
A bridge between a film you've already seen and one most people haven't. Here's what they share, and what the second one does that the first one doesn't.
What they share
Both films are directed by Noboru Iguchi, and they both carry the cozy, dread, late night mood tags, and they sit in Action / Comedy / Horror territory. If that's the register that drew you to Nuigulumar Z, the second film will land in a comparable space — through a different lens.
cozydreadlate night
What Shyness Machine Girl is
Junkyard. Rain-slicked chrome. A high-pitched drill. Yoshie, murdered and rebuilt, now seeks vengeance on the Kimura gang. Ami, too, remembers her past. Both women are modified for maximum carnage. Iguchi's signature splatter-absurdism should prepare you for next-level gross-out.

