YSN-476 Kanna Shinozaki, the clumsy and masochist chubby sister with a tight T-shirt, is irresistible

My older sister has gained so much weight that she can't wear pants anymore. - She asks her younger brother for support, but his naughty younger brother's mischievous spirit ignites, and he puts his hand inside her sister's pants and moves his fingers. - From there, the younger brother gradually escalates and tricks his naive older sister into saying things like, ``Let's fuck to get a smaller face,'' ``Let's shake our hips in cowgirl position to get fired,'' and ``Let's do missionary position to train our abdominal muscles.'' - ” and ``Let's drink semen to make our skin smooth.''