The younger sister, who made her debut in a video produced by her older brother, secretly comes to shoot an AV without telling him this time. After experiencing how pleasurable the previous male actor's performance was, she's been eager to try creampie sex. When her brother finds out, he tries to stop her by explaining that creampie can lead to pregnancy, but she defiantly tells him, "Just stay quiet, big brother!" and proceeds with the raw creampie shoot, clearly showing her independence. From the next room, her brother silently monitors the shoot, watching over his sister's first creampie experience—an intimate moment reflecting both their sibling bond and her personal growth.