One night, when I thought that my super serious sister got drunk and came back, I came to my room and fired off-color humor! Take off your clothes and see your underwear! Hit your boobs, take off your pants, and vulgarly erotic runaway! I had no choice but to lie down in my bed ... When I woke up in the morning, I couldn't remember completely! why! ?? naked! ?? My older sister, who is shy and shy, is extremely cute, and I suddenly get an erection! And I just noticed my erection and had sex with my excited sister ...!