Daichi, who lives with Maika, comes over with Michael, an international student. Maika, who is interested in English, is interested in Michael, and the two become good friends. Michael spills his drink and it gets on his pants, accidentally exposing his huge penis. Maika is shocked by the size, which is completely different from her boyfriend's, and becomes very interested in his huge penis. Gradually, the two start to become aware of each other and cross the line.