She was cuckolded by her naughty older brothers and became a sensitive sex pet. Momo Misono
This is the first time I've met a somber but serious girlfriend. Even though he actively tried his best to be cute, I was confused and coldly pushed him away. When the older brother saw this, he approached her half-forcefully and ended up seducing his younger brother's girlfriend. She was too sensitive and had a tendency to cum easily, so her brother and his friend treated her like a sex pet toy...
