Living with my tsundere brother's wife has turned into a daily battle of temptation and torment. As soon as my brother leaves for work, she starts teasing me relentlessly. Sometimes she deliberately masturbates in front of me, other times she flaunts her intimate moments with her husband. Gradually, her actions begin to stir something deep within me—until one night, she sneaks into my room. And that's when we cross the line, sealing a forbidden relationship that can never be undone.