Makoto, a university student with a fondness for the nearby pool, takes on the task of teaching the inexperienced Marina how to swim. Their close guidance soon stirs unexpected reactions, awakening a latent sensitivity in her that leads to an overwhelming release. This moment unveils Makoto’s remarkable talent for drawing intense pleasure from touch alone. As word spreads, he finds himself exploring this gift with a variety of women, each encounter deepening the mystery of his newfound ability.