IENE-372 Today, my sister's friends came over to play, but our home heater broke down. So I lent them the kotatsu in my room. They said it was too hot and asked me to adjust the temperature. When I got inside, there was a sweet and sour choking smell and

"It's cold, so take out the kotatsu," my sister's friend came to play at our house. But the heater broke down, so we decided to use the kotatsu. They told me it was too hot and to adjust the temperature, but when I got in, they were sitting with their legs wide open because of the heat, and both my sister and her friend's panties were fully visible. Plus, they were wet from sweat. I instantly got a full erection. Finding this amusing, my sister's friend started playing with my dick...