NASH-983 Forbidden domestic affair with my younger brother's wife who lives together

My younger brother's wife has a strong sexual desire. Every day I am at the mercy of my younger brother's tsundere wife who seduces me almost every day. As soon as my brother goes to work, he starts playing tricks on me. Sometimes they deliberately show off masturbation, and other times they show off the activities of a married couple. And then it finally happened. She sneaks in when I'm trying to sleep...and we cross a line that we shouldn't cross.