The Minami residence is home to three sisters: Haruka, the rigorous and industrious oldest sister; Kana, the air-headed and cheerful younger sister; and Chiaki, the youngest, whose sharp tongue spares no one. The sisters share the duty of cooking and laundry, as well as the odd love excursion, while living without parental supervision. There is never a dull day in the Minami home, from fighting chronic sloth to hanging out with pals.