Jupiter, the newest member of Kyouichirou's party, is supposed to become the terrifying boss of Dungeon Magia's true route. But this rag-tag team of former villains isn't going to let that come to pass! And now that they know it's not her fault, but that of the beast sleeping inside her, it's time for an exorcism! Just as they're getting started, however, someone from Jupiter's past appears. It seems there's still more to learn about this mysterious girl and the true nature of her contract with Keraunos...