After getting out of the bath, the sister becomes increasingly sensual through massage. When her brother says, "Isn't it better to have someone else do it rather than doing it yourself?" the atmosphere suddenly turns mature. Despite her giggling protests, the brother shows no intention of stopping. He begins massaging slowly from the tips of her toes with a vibrator, building anticipation about where this might lead. Eventually, he moves on to a deep internal orgasm—stimulating her cervix—after teasing her with light nipple play, finally bringing her to climax by stimulating her clit. You can clearly see her ascending into womanhood as she comes. Sensitive Buruma is so responsive that she can orgasm even with vibration applied over her panties. When her brother whispers, "Want to try direct contact?", her reaction becomes even more exciting.