Koji is a perpetual employee who doesn't get excited. Today, I unusually won a big race at a horse race, and as a reward for myself, I went to an ultra-luxury soapland...and to my surprise, the person who appeared there was my wife's mother! ! Oh, mother-in-law!? Koji-kun!?...Please! Don't tell everyone! Koji forgets his own situation where he is playing around with his wife and is surprised to see his mother-in-law's face, which he did not know about. but…. “Hey, this is a shop.