A pair of siblings on a trip. While relaxing in the kotatsu, the sister fell asleep, so I tried to wake her up but found that the kotatsu was too hot and she was drenched in sweat! Her armpits and chest were glistening with sweat, and it was so erotic that I accidentally got an erection! Unable to hold back, I crawled into the kotatsu and touched her ass and pussy, resulting in a stain on my underwear! As I took off her panties and touched her directly, she woke up…
