Definitely one of the better shows this season. Great animation quality for a slice of life series, great characters, and a large assortment of idiot side characters for each sister (though Kana is the idiot of her class).

Chiaki undoubtedly deserves her nickname. Even if you're not supposed to give yourself one, no other is appropriate. She rules over everyone in her class, and Kana. Only Haruka, the "queen," receives her respect.