Ichika Kamihata, a 173cm tall beauty, and Mao Hamasaki, a girl with big E-cup breasts, who debuted at the same time from the same manufacturer. Although they have completely different body types and personalities, they get along well in their personal lives. The first co-starring work of such two people is "Mabudachi and Lesbian!". They endure each other's shyness, and show the geisha Karami in the setting corner of married lesbians, and show each other where they go in the orgasm research corner. However, when it reaches the last corner where there is no setting, it turns around and begins with a tearful kiss.