I went back to my wife's hometown. My mother-in-law, Mio, is a beautiful woman, and my heart races every time I visit. Today, she apparently had a meeting, and along with my wife who had sweated during the trip, Mio began to change her clothes. My wife told me she didn't have a change of clothes, so I brought her bag over. Seeing Mio in her underwear there completely captivated me. That night, after dinner, I was having a drink, but my wife went to the bedroom early. While I was feeling lonely, my mother-in-law came home tipsy. She invited me to drink with her, and the two of us shared some alcohol. The conversation stopped, and her moist eyes stirred my heart. We grew closer, gazed at each other, and our lips naturally touched. Crossing the line, we became a man and a woman, craving each other greedily. The next day, in a slightly awkward atmosphere, I exchanged morning greetings with her. She hurriedly left the living room. Glancing over, I saw the remnants of last night in the trash. I quickly hid it so my wife wouldn't find out and pretended to be calm. I waited for my wife to go out and then went to my mother-in-law. Handing her the remnants of last night, I hugged her. We confirmed that neither of us regretted this relationship. Since then, we have made love and met secretly many times. It seems we might start living together as three soon...