Onii-chan no hanbun wa yokubou de dekite imasu CG

O-Onii-chan what are you doing?. It’s just a normal day, but suddenly MC’s desire to engage in sexual activity became uncontrolable. He wanted to have sex with the girl around his age, but when he saw his half-sister asleep he can no longer endure it and decide to masturbate to her body. As days pass, their feeling became mutual.