Exposition Senpai

Exposition Senpai is an unnamed character in Ueno-San wa Bukiyou. He is a former member of the Science Club, and is 2 years older than Ueno.

He tells Ueno about the history of the Science Club, thus the nickname "Exposition Senpai."

Appearance
He has longer hair with prominent ear bangs. A chibi depiction on the back of Volume 9 reveals that he has black or charcoal hair and eyes. He wears rectangular framed glasses similar to Yamashita's.

He has been seen wearing the boys uniform and a gym outfit.

Personality
He hasn't said much in the series yet, but he tells Ueno about the history of the Science Club, which the Former President finds boring.

History
He has only appeared twice in the story thus far:
 * Chapter 60: He tells Ueno about the Science Club, but accidentally makes it sound boring.
 * Chapter 81: He is present at the relay race, but doesn't run in it.