Beat Angel Escalayer

Beneath her ordinary high school life, Sayuka Kouenji hides a secret: she transforms into Escalayer, Earth's last defense against an alien force called the Dielast. The catch is her power source, the Doki Doki Dynamo, runs on sexual arousal. Her android companion Madoka has been handling that side of things, but when Sayuka's energy levels drop to dangerous lows, they pull in Kyohei, a classmate who's had feelings for Sayuka for years, to help keep her combat-ready. That's the setup, and the OVA commits to it fully across its three episodes. The tone lands somewhere between a magical girl show and a very adult sci-fi action story. There are genuine fight sequences, a bit of world-building around the Dielast threat, and some actual character chemistry between Sayuka, Madoka, and Kyohei — it's not purely gratuitous, even if the explicit content is front and center. If you've seen La Blue Girl or Mahou Shoujo Ai, you'll recognize the genre: supernatural female warrior, power tied to sexuality, enemies that push that premise into uncomfortable territory. Bible Black covers similar tonal ground if you want another reference point. It's a 2002 OVA adapted from a visual novel, so manage expectations on animation fidelity. What it does well is lean into its absurd premise with enough sincerity that it doesn't feel lazy. If that particular blend of magical girl tropes and hentai is your thing, this is a reasonably solid example of it.