Tsumugi and I have been married for a few years, she is a devoted wife to the family. Today, she even prepared lunch for me, making me feel as happy as if we had just gotten married. Yamashita is my successor, I often see him staring at his phone, even while eating. It turns out he is using a dating app, and his targets are married women. "Married women often feel unsatisfied with their sexual desires," "they are the easiest targets to flirt with, and the easiest to 'play' with." I think that's only a few, I don't believe every woman is like that, especially not my wife. Yamashita said he wanted to try with my wife, and I reluctantly agreed. So I invited Yamashita to dinner at home, then made an excuse to go out, leaving Yamashita with Tsumugi for 3 hours. When I returned, everything seemed normal, believing that nothing happened. But since then, my wife seems to be changing more and more...