To collect more goddess blessings and grow closer to defeating the demon lord, the hero Touya travels to Neptunopolis, a beautiful blue city by the harbor. Soon after arrival, he has a chance meeting with another hero, and then reunites with someone completely unexpected! Unforeseen events occur one after another, but our heroines don't forget to change into swimsuits and splash around at the beach as well. Now then, will Touya's Unlimited Bath have room for one more?