These special o-rings are used for squeezing up delicate parts...they're so tense that the applied parts are most likely to bleed while rings are pulled off. Now Naga is having fun watching Bella's reaction before decorating the other one of hers. 敏感な部分を締め上げる時に使われる特殊なOリング。強度があるので一度付けると外す際に出血します。 片方を終え、もう片方に取り掛かる前にBellaが身体をよじる様を見据えるNaga。 Keywords: Bella, Erected nipples