Sachi Komine (小嶺幸, Komine Sachi) is a first-year student at Mihama Academy. She is the maid of Mihama Academy. Except when going to school, taking a bath or swimming, she always wears her maid uniform. She said that everyone told her to wear maid uniform as much as possible. Polite and has strong sense of responsibility, she never fails to accomplish any request from others. In her action dictionary, there are only 3 words “receive” – “confirm” – “execute”. Because of that, she often she takes a joke too seriously and causes a lot of trouble. Her favorite animal is the shark. The shark-shaped pouch which Michiru carries around is made by her.