Ume Matsuzaka (松坂 梅), Miss Uma in the Vitello and Phuuz dubs and Ms. Katz in the Funimation dub, is the arch-rival of Midori Ishizaka of the Rose class. She is 24 year old and single. She likes to live stylishly in public but she actually struggles to save her money for accessories but lives in a very cheap, dusty apartment.
She dislikes her given name as she always says to Yoshinaga and others, "Don't call me Ume!". This is due to one of the meanings of "Ume", which can mean "3rd class" or "low class". Although she always says she is "tired of Futaba Kindergarten (especially Shin-chan)" and plans to move out to a better school, she never seriously intends to do it. She even rejects so harshly a man who offers her a better job in another school and mocks Futaba Kindergarten. Despite her rivalry with Midori, deep down she cares for her and helped her reconcile with her future husband, Junichi Ishizaka. A running gag about her is that her dates are often screwed up by Shin-chan in various ways, until she meets Tokurou.
Ume means plum in Japanese. She is named after Keiko Matsuzaka.
English: Clarine Harp, Grey DeLisle
Japanese: Michie Tomizawa
German: Christin Marquitan
Korean: Chae Eon Han