If you loved Stacy: Attack of the Schoolgirl Zombies, try Vampire Girl vs. Frankenstein 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.
You already loved

Stacy: Attack of the Schoolgirl Zombies
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Vampire Girl vs. Frankenstein Girl
What they share
Both films are directed by Naoyuki Tomomatsu, and they both carry the cozy, dread, late night mood tags, and they sit in Comedy / Horror territory. If that's the register that drew you to Stacy: Attack of the Schoolgirl Zombies, the second film will land in a comparable space — through a different lens.
cozydreadlate night
What Vampire Girl vs. Frankenstein Girl is
Japan. Cherry blossom snow. Severed arm. A mad doctor reanimates a gothic lolita. She craves the blood of one specific classmate. Another student, rebuilt from spare parts, wants him too. Nishimura-school splatter madness, plus romantic angst.