Two childhood friends living nearby reach adolescence, secretly developing feelings for each other. One day, when Aoi's father falls ill, her friend starts pretending to be her boyfriend to cheer her up. She insists, "It's just pretend, and only in front of my dad," putting on a brave front—but as their time alone together grows, genuine emotions slowly begin to blossom. Starting with awkward kisses, their feelings intensify until they forget it was ever just a game. The two lose themselves in passionate creampie sex, capturing the purity of adolescent love and the intense desire that emerges within it.