My sister-in-law Toko, whose frustration is so piling up, accidentally sneaks out of me with my older brother on a trip, and I can't hold back, so I secretly have sex with her infidelity

My brother and I encouraged me, who was dumped by her and was at a loss for a long time, and then took me on a hot spring trip. That night, when I opened my eyes to hear the noise crawling on my futon, my sister-in-law Toko mistakenly sneaked me and my brother into the night! The next morning, he apologized for the misunderstanding, but he hadn't been with his older brother for a long time and was frustrated, and he asked for more, saying, "It's fine to just travel..."! It's bad for my brother, but I'll take my sister-in-law's frustration away from her!