SCOP-529 ビックリするほど可愛いジムインストラクターの美尻が無防備過ぎてムラムラ！突き出した大きくて柔らかそうなお尻はボクを誘っているの？しかもジムはいつもガラガラの貸し切り状態！コーチしながら誘うように振る美尻に僕のガマンの限界～～！！

Those adorable buttocks of a gym instructor are absolutely stunningly cute. They’re so vulnerable and tempting… Those protruding, large, and soft buttocks seem to be inviting me in. And then there’s the fact that the gym is always completely booked up! I can’t hold back anymore when I see those beautiful buttocks tempting me to touch them while working out…