Birthdate: June 16th (Gemini)
Blood type: A
Height: 143 cm
Class: 5-B
Team Jersey Number: 13

A very stubborn girl and a childhood acquaintance of Saki. She is also Saki's rival because both their families own restaurants and, before the start of the series, Masami's store lost to Saki's to be featured in a magazine.
(From Wikipedia)