The Delinquent Housewife!, 2

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...