HUNTA-763 "Big brother, are you avoiding me?" "Idiot, it's the opposite! (※Inner voice)" 4 My little sister who innocently approaches me...

My innocent little sister loves me so much! But she's my perfect type, and she always comes to me without any guard, even entering the bath with me. In the narrow bathtub, her developing breasts and skin rub against mine, and of course, I get an erection. I thought she would hate me if she noticed, but my sister said, 'If it makes you happy, I'll do anything' 'My nipples are really sensitive. Go ahead and touch them.' So I played with her nipples, and she came so hard that her body arched repeatedly.