Mitsuki, who has a boyfriend and lives a fulfilling daily life, and Kokosaki, a shy girl with no sexual experience. Though completely different in personality, the two are best friends living together. One day, out of curiosity, Kokosaki asks Mitsuki to teach her how to kiss—and quickly awakens to lesbian desire. She begins masturbating while thinking of Mitsuki, attacks her while she sleeps, and comforts a heartbroken Mitsuki (after being dumped by her boyfriend) using adult toys, deepening their bond. Eventually, their feelings become mutual. Exchanging passionate, saliva-filled kisses and rubbing their cunts intensely together, the two dive into loving, intimate lesbian sex, reaching an ultimate climax in a deeply romantic scene!