Oppai Gakuen Marching Band-bu!

When his camera gets wrecked during marching band practice, a photography-obsessed high schooler stumbles into something he definitely did not ask for. A mysterious woman in a bunny suit hands him a replacement camera on his way home — and it turns out this thing is cursed, enchanted, or something in between. Every girl Yuuji photographs with it becomes overwhelmingly aroused, and the band members he accidentally shoots are the first to feel the effects. Minamo and Natsumi start acting very differently around him, and things escalate quickly from there. That's the whole setup, and the single OVA episode leans fully into where you'd expect it to go. The marching band setting is a genuinely unusual backdrop for this kind of story — most school-based hentai OVAs stick to generic club rooms or classrooms, so there's at least something visually distinct here. The supernatural camera angle gives it a slight absurdist edge rather than just a straightforward power fantasy, which helps it stand out a little from the crowd. If you enjoyed Binkan Athlete or Oppai Heart: Kanojo wa Kedamono Hatsujouki!?, this sits comfortably in the same lane — short, uncomplicated, and focused on exaggerated character designs with a light supernatural hook. Fans of Deka Kute Ecchi na Ore no Ane will also find familiar territory here. It is a one-episode OVA from 2014, adapted from a visual novel by T-Rex, so go in knowing exactly what it is and you will get what you came for.