If you loved Eat the Schoolgirl: Osaka Telephone Club, try Zombie Self-Defense Force
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.
You already loved

Eat the Schoolgirl: Osaka Telephone Club
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Zombie Self-Defense Force
What they share
Both films are directed by Naoyuki Tomomatsu, and they both carry the 3am cult, dread mood tags, and they sit in Horror territory. If that's the register that drew you to Eat the Schoolgirl: Osaka Telephone Club, the second film will land in a comparable space — through a different lens.
3am cultdread
What Zombie Self-Defense Force is
Abandoned streets on a rainy night a crashed UFO. Soldiers and civilians barricaded in a hotel. A staple of Japanese horror.