Luna, a friend of the mother's and a childhood crush who has come from France. Her son Ataru is overwhelmed by her unchanged beauty, left speechless and visibly innocent. Seeing his shy demeanor, the slightly tipsy Luna feels a playful urge and initiates their first kiss. Excited by the sensation, Ataru sneaks into Luna's bedroom late at night and witnesses her masturbating to satisfy her sexual desires. Unable to restrain himself any longer, Ataru kisses Luna again, setting in motion a surge of new emotions.