On a weekend off, Kazuya visits his relatives' house for the first time in a while. Every time he comes here, there's one special pleasure he looks forward to—his feelings for Aunt Yuko, who has always been kind, beautiful, and radiates a gentle presence. He harbors an indescribable emotion toward her, something deeper than mere admiration or infatuation. But one night, he accidentally witnesses his uncle secretly meeting with Aunt Yuko. Shocked and emotionally shaken, Kazuya is overwhelmed by an intense lust he's never felt before. This revelation forces him to finally confront the true nature of his feelings.