The H acts of the three gals who get into it escalate steadily. "Reina", which had been rustling, just started to spoil "Yukina" who had a relaxed attitude was tossed on the contrary with a vigorous etch "Ruri", who had decided to keep calm, was more motivated to monopolize than anyone else. While such a relationship continues, we will go on a hot spring trip with four people ...!?