Yumeko Tachibana (立花 夢子 Tachibana Yumeko) is one of the minor characters of the Kono Bijutsubu ni wa Mondai ga Aru! series. She is the adviser of the art club after Yukio Koyama becomes the adviser of the newspaper club.
Yumeko is a young woman with waist-length caramel brown hair, caramel brown eyes and she often wears round her glasses everytime.
Yumeko appears as a very shy young woman who often shows her clumsy side.
Despite of her clumsy characteristic, she can be very serious whenever her students did something immoral.
- The name Yumeko means "dream, vision" (夢) (yume) and "child" (子) (ko).
- Yumeko's surname Tachibana means "standing" (立) (tachi) and "flower, blossom" (花) (hana/bana).
- After Yukio Koyama (the former adviser) becomes the adviser of the newspaper club, Yumeko is a new teacher who in charge of the art club.