Before she could even protest to Yuuki she had been fully submerged into the water. Being completely groped by her brother her eyes widened  in shock at his ambush surprise. She squirmed fiercely to free herself of her brother her slick skin and plump rear rubbing up intently against his erection. Of course not on purpose, but she wasn't complaining either. She forcibly came up for air "Yoji you are in such trouble!"She fussed.