Kanojo wa Dare to demo Sex Suru.

When Erika Sakurai receives a confession from Kazuhiro Sayama, her response is... not what he expected. She immediately hooks up with their gym teacher right in front of him. Turns out Erika is a full-blown exhibitionist sex addict who gets off on being watched, and she has a proposition for Kazuhiro: become her personal cameraman, filming every encounter, with one hard rule — he watches, but he never participates. He agrees, because he's still hopelessly into her and this is apparently the closest he's getting. That setup is genuinely strange in a way that sticks with you. It's not just explicit content for the sake of it — there's an actual psychological thread running through it. Kazuhiro is caught in this weird, painful limbo between desire and rejection, and Erika is a character with real presence rather than just a vehicle for scenes. The dynamic between them carries unexpected weight for a 2-episode OVA. If you've watched something like Dare Demo Dakeru Kimi ga Suki or Itaike na Kanojo and wanted a slightly more character-driven angle, this scratches that itch. It's still very much adult content, so go in knowing that, but the voyeurism premise gives it a bit more narrative texture than most titles in the genre. Don't expect a full emotional arc in two episodes, but as a compact, premise-focused OVA from T-Rex, it delivers something more specific than generic.