A Dissatisfied Married Women Finds Herself Alone With Her Brother-In-Law And Crosses A Line That Shouldn't Be Crossed - Tsumugi Akari

My older brother suddenly said he wanted to go camping. Apparently it's awkward being alone with his wife... I thought 'You got a beautiful wife, don't complain,' but I was happy to go camping with Yumi-san. Then on the day, around the middle of the camping trip, a sudden storm. We took shelter in a mountain hut but the situation didn't change... In the mountains with no cell signal, my brother went down alone to call for help. Yumi-san and I were left alone in the mountain hut.