|School||Kaimei High School, Class 2-?|
|Manga Debut||Chapter 1|
|Anime Debut||Episode 1|
The Campus SKET
Yumi (ユミ) is an overweight student who is questioned about the "Paint-Man" incident together with Masatoshi. She dates him until the Sket Dan mention that he targets unintelligent, easy-to-charm girls - after which she dumps him. She later becomes the bass player for Yabasawa's Kaimei Rock Festival band, but falls sick along with the rest of the band members.