My sister dozed off in the Kotatsu at the inn we were staying at. It was getting hotter and hotter, and sweat was pooling around her chest, and her armpits were soaked with sweat, making her shiny and super sexy! I couldn't resist my lust, so I crawled under the Kotatsu and started touching her secretly, and it seemed like she was in a dreamlike state, and I noticed a stain on her panties! #HUNT-962