Komugi, the reformed delinquent who can’t do a lick of housework, recruited her kid brother-in-law in an effort to hide her secret failings as she works to better herself before the rest of her husband’s family realizes the truth. Komugi is a sore loser and can swear like a sailor, but the more time they spend together, Dai learns that she is also sincere and courageous, and one day he realizes that he might just be falling for her—the one girl he absolutely can’t have! As if that wasn’t enough for a high school junior to deal with, now Dai’s classmate, Yoshino (who has a bit of a crush on him), starts getting curious about Komugi's past...