Ai and Riko are best friends who attend the same university. They are both aware of each other, but they are afraid of ruining their relationship and are unable to express their feelings to each other... When Riko visits Ai's house, she falls asleep after talking tiredly, and tries to kiss her. Then Ai wakes up... The two take a step forward as lovers, greedily kissing and taking off each other's clothes. They passionately caress each other's bodies, connect deeply with a double-headed dildo, and become addicted to pleasure. Then, as the night draws on, the two bid farewell with a vibrator and a sweet kiss.