She and Hotaru have been dating for two years and plan to get married next year. One day, Michael, who works for Hotaru's father's company, comes to stay at Hotaru's house as a homestay student. Hotaru reluctantly accepts, but it turns out to be a mistake. Michael is black and has a huge dick that is incomparable to Japanese men. When Hotaru sees it with her own eyes, her head becomes filled with Michael's huge cock... Hotaru's pussy, pried open by his thick, black cock, becomes Michael's exclusive domain.