Hikari, the aunt, reunites with her nephew Takashi, who has come to stay for a few days while preparing for exams. He's grown so mature lately that Hikari teases him, saying, "Taa-kun, you've gotten so grown-up. You might just be my type." But his reaction sparks more curiosity than she expected. That night, Hikari deliberately lets Takashi hear her moans while masturbating, and when he panics and tries to flee, she gives a lewd, suggestive lick of her lips. Realizing the truth, she whispers, "Just as I thought... Taa-kun... you're still a virgin," then, despite him trying to study, she slides her hand toward his crotch, setting her sights on taking his virginity.