Oide yo! Shiritsu Yarimakuri Gakuen

A private academy with a deeply unconventional grading system is where Mira Campbell transfers — a school where students advance based on sexual encounters rather than test scores. That's the entire premise, and the show leans into it fully across its 4-episode OVA run. There's no slow build or pretense of something deeper hiding underneath. This is PoRO doing what PoRO does, which is adult content with noticeably clean animation and character designs handled by Mizuryuu Kei, whose artwork fans of the genre will recognize immediately — detailed, expressive, and consistent throughout. The academy setting gives the story a loose structure to hang its scenes on, with Mira's arrival as the new transfer student serving as the audience's entry point into how this school actually operates. It's not trying to be Discipline: The Record of a Crusade in terms of narrative complexity, and it's lighter in tone than something like Bible Black. If Stringendo: Angel-tachi no Private Lesson sits in your watched list and you enjoyed it, this covers similar territory with a more focused concept tying the episodes together. The light novel source material gives it slightly more connective tissue between scenes than you'd expect from a typical short-run adult OVA. Don't go in expecting plot twists or character arcs — this is exactly what it presents itself as, produced competently for an audience that already knows what they're looking for.