Years after visiting the Ashina family home, Kazuya reunites with his aunt, Miho Ashina. She remains as beautiful as ever, awakening new emotions within Kazuya, now entering adolescence. That night, he accidentally witnesses Miho masturbating in the kitchen. From that moment on, Kazuya begins to see Miho not just as an aunt, but as a woman. Their relationship starts to take on a new, intimate form.