The Delinquent Housewife!

The manga's slapstick comedy story follow's a second-year high school student whose older brother's wife moves into the family home. The move was supposed to be only until the couple could find a new home. However, the husband suddenly goes overseas for business, leaving his wife to live with his younger brother and other family. Contrary to the student's image of the woman as an ideal housewife, his sister-in-law is completely inept at cooking and cleaning.