Synopsis
After their parents died, siblings Akito and Akiko Himenokouji were separated and raised by different families for six years. Now they are finally reunited and start living together. It soon becomes clear that Akiko has romantic feelings for her brother, but Akito sees her only as a family member. When three additional girls—Anastasia Nasuhara, Arashi Nikaidou, and Ginbei Haruomi Sawatari—move into their apartment, Akiko's dream of living alone with her brother disappears. Furthermore, these girls each have some kind of affection for Akito, making it even harder for Akiko to get his full attention. As the girls compete over who gets to look after Akito, they engage in various acts of eroticism that might be too much for an ordinary man to handle.