To celebrate their game's unprecedented sales, the team heads to a spa for a well-deserved vacation. Amidst the relaxing atmosphere, Mochizuki finds himself in a series of steamy encounters with Iori, Kisara, and Moka, ranging from accidental mixed baths to a thrilling "test of guts." As the trip concludes with a beautiful night under the fireflies, Mochizuki gathers plenty of inspiration for the team's next project.