Makoto's life takes a complicated turn when his childhood friend asks him to pose nude for her art project, leading to a series of unexpected events. As he navigates through love, family secrets, and newfound emotions, Makoto finds himself drawn towards the mysterious Mizuhara. Amidst hidden feelings and steamy hot-spring ventures, Makoto's relationships evolve, leaving him to ponder if they are growing more intricate or simply becoming more fulfilling.