A family comedy manga about a high school boy and his sister in law who moves in, who has a big secret from her past. High School sophomore, Dai Komukai meets his sister-in-law Komugi, who moves into the Komukai household. After his brother leaves for a business trip, Dai senses something weird with his sister in law. Outwardly nice and cute but Dai finds out that she actually can't cook or do laundry! And then one night he finds out another big secret!