Angry at her husband, his wife left home and had sex with her husband's brother

Mayuki Ito had an argument with her husband, so she got angry and left home. She went to her brother-in-law's house to stay away from her husband for a while. Who would have thought that after going to her younger brother's house, seeing how much he had grown up, the house was big and beautiful, making her feel more in love with him, it seemed like they had liked each other ever since and then what? come also come…