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 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.
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.