KSWP-004: 完成原始交換 04 內在陰道注射交換！ Yui，一位第一次體驗交換的託兒所老師，因為她經常邀請自己和Satomi，一個嫉妒公司老闆的豐滿OL，他希望與一個年輕女孩發生性關係，所以她想改變自己的陳規陋習關係

Complete raw swapping 04 Intrinsic vaginal shot swapping! Yui, a nursery teacher who has her first experience of swapping and wants to change her rut relationship because she often invites herself & Satomi, a busty OL who is jealous of the boss of the company who expects sex with a young girl