A girl with nothing but a water-finding gift runs into the only crew in this world crazy enough to bet everything on her potential. The OVA strips away the tournament bloat and just lets you watch four idiots turn a dried-up hot spring into a game board where slave traders lose. It's a reminder that the series works best when it stops explaining the rules and just lets competence be fun.
A girl named Hifumi crashes through the forest, fleeing from slave traders who want to capture her. Her escape ends in the arms of Izayoi, a problem child with supernatural strength, along with his companions Asuka and You. Together, this unlikely group defends Hifumi and shuts down the trafficking operation, discovering she possesses a rare gift: the ability to locate water anywhere. With Hifumi's power suddenly relevant, the crew learns of a dried-up hot spring that could be restored. Kuro Usagi and her friends challenge them to a Gift Game, a high-stakes supernatural competition where winning means reclaiming the luxurious baths. The catch is that problem children like Izayoi and his crew tend to bend the rules, turning what should be a simple quest into comedic chaos. This OVA strips away the heavy plot threads of the main series and lets the cast breathe. It's pure comedic fantasy where overpowered kids cause mayhem while chasing a bath, blending silly humor with brief moments of genuine action. Perfect if you want the franchise's charm without the commitment.