At a swimming school, two beautiful coaches, Rin and Rei, are always the center of discussion due to their stunning looks. Miyamoto, a regular student who often dreams 'darkly' about the two, one day discovers a strange note stuck in his locker. It reads: 'Remove this paper, and they will completely obey you!' Without hesitation, Miyamoto tears off the note, and from then on, he turns Rin and Rei into his obedient 'slaves'... Hehe!