I'm 29 years old, and my name is Yui. Although I'm a married woman, I've been involved with my former factory's plant manager for the past five years. He's a married man who left his corporate job and now lives as an unsuccessful artist. While I know very well that what we're doing is wrong—especially since I have a family of my own—I simply can't break away from his mature charm and his body. No matter how hard I try, I can't bring myself to end this affair.