I'm Definitely Going to Take a Bath!

Coming to Rajima Volcano to heal their wounds, Leviatan and her friends decide to spend the night at an inn. While the extravagant meals, soft beds, and massages leave nothing to be desired, for some reason, the hot springs only have a little water in them. Unable to understand the reason for the loss of hot water, business has been poor, and the inn is in danger of being shut down...