[Colonexe] Onee-chan ga Oshikko Tetsudatte Ageru [Penguin Piper] [Full Color]

A doting older sister offers to tenderly take care of her younger sister's most private need, turning help with peeing into an all-consuming act of devotion and possession. Pressed close with soft big breasts, plush thighs and full hips trembling together, the pair dissolve into devoted cunnilingus, shuddering climaxes and intimate urination and piss drinking that leaves them flushed and clinging. Sweet, obsessive and breathlessly affectionate, their promise to belong to each other forever makes every surrender feel like a vow no one else is allowed to share.