Yuji enters a private school and begins living in a dormitory. His family home is far away, so he rarely gets to see his parents. His father remarried a woman named Kana, who to Yuji has always felt less like a mother and more like an object of deep admiration. One day, after graduating, Yuji returns home still innocent and unaware. Suddenly, Kana approaches him. Unable to hide her own joy, she smiles seductively, her body exuding a rich, alluring fragrance, whispering, "Let's celebrate—just the two of us." In that moment, something stirs deep within him. At this pivotal point of graduation, sharing an intimate moment with someone so dear marks the beginning of a bold new step forward.