Ruri secures travel vouchers for a hot spring resort, leading Imaizumi and the girls on a luxurious getaway. The trip quickly turns into a steamy marathon of passion as the gals compete for Imaizumi's attention both in the baths and their room. After a whirlwind of indulgence and intense intimacy, the exhausted Imaizumi eventually crashes, leaving the girls to reflect on their growing affection for him.