He goes to the same middle school with Reiko Yuki in the Sket Dance franchise.
Kobayashi declines Reiko's offer to go out with him in middle school due Reiko's scary appearance. He hurt her feelings back then.
Kobayashi, who is created by Kenta Shinohara, has no information regarding any inspiration used to create him. He first appears in Sket Dance volume 5 and episode 21. His Japanese voice actor is unknown.
He bumps into Reiko Yuki and Switch at the mall. After recognizing Yuki, he apologizes to her for turning her down. Yet, Kobayashi tells Reiko to look cooler because she still is the same, scary person. He unknowingly hurt Reiko's feelings and thinks Switch is Reiko's boyfriend. Kobayashi leaves Reiko to see a movie with his date. Later in the day, he complains about how close he was to getting that girl. When he sees a beautiful girl with brunette hair in front of the fountain, he makes his move to flirt with her. However, the girl says that she is waiting for someone. Switch appears and tells Kobayashi that this is Reiko. He explains to Kobayashi about how Reiko's looks are improved by his cosmetic knowledge. The impressed Kobayashi asks Reiko to go out with him, but Reiko curses Kobayashi to fall into the fountain.
We don't have any info about Kobayashi's related characters. Help us fill it in!