Mato Seihei no Slave

Mato Seihei no Slave knows exactly what it's selling and doesn't feel bad about it. The setup is crazy: in this matriarchal world, only women get superpowers from this strange dimension. Our main character, Yuuki, ends up being Kyouka's literal combat slave. Kyouka is a commander in the Demon Defense Force. This is where things get interesting: Yuuki turns into a powerful beast to kill monsters, but the slave contract says that Kyouka has to "reward" him in more and more suggestive ways afterward. It's a battle shounen with a lot of fan service that is really fun to watch. The action scenes are actually pretty good, and the tactical fighting is much better than it should be given the premise. The whole power dynamic runs on intimacy-as-fuel, which is either something you like or something you don't. But the show sticks to its guns, delivering both the ecchi content and surprisingly good fight choreography without pretending to be something it's not.