Chest

Rubbing those beautiful breasts until my G8 stood erect and got clamped between my abdomen and my sister's back... I increased the number of times my fingers touched her nipples. The scene that originally only had the sound of water now began to have faint female moans. Added to this enclosed space, the echo effect made it even more intense. My sister sensed something was off and pulled my hand to signal no, but the mischievous me still caressed her nipples not long after. Over time she stopped resisting and became immersed in that slightly ticklish pleasure. Since my sister didn't mention washing the lower body, I washed from her back down to her abdomen. She stepped out of the tub to wash her lower body herself, and I also finished washing up before entering the bath with her. However, I figured the earlier teasing must have also aroused my sister's lust—maybe her lower part was already full of her own fluids. This time I hadn't done anything she couldn't accept from start to finish, and she seemed quite satisfied with my behavior. So we soaked in the hot water and chatted casually. Our distance gradually closed until she finally sat in front of me… leaning back against me as I held her. My hands cradled the underside of her breasts with the webbing between thumb and forefinger, shaking them lightly. After a while I cupped both breasts so the nipples stood high, then used the pads of my index fingers to rub the tips and the edges of her areolas. My sister couldn't hold back again and let out another soft moan. I whispered in her ear: “Sister… there’s no one else here. If you can’t stand it, just moan out loud.” With that I increased the pressure of my hands. My sister’s moans echoed through the bathroom as she melted limply into my arms, letting me caress her.