Saizō Tsukuba

Plot
He was the referee for Kenichi's fight against Daimonji and quickly wanted to test Kenichi's skills after his win. Though he easily defeats Kenichi, he is not satisfied with his victory after he finds bruises on himself after his fight with him. When he later fights Kenichi the second time, Kenichi wins rather easily by using one of sport karate's fundamental weaknesses of not being use to the free-style nature of street fighting.

Skills and Techniques
He is a black belt in the Karate club. His style of martial arts is sport karate, which focuses on the key basics of karate and mixes in other techniques such as boxing. He is quite a strong fighter, as "he can take on two people from the Karate club at once, can break rocks with his bare hands, and break bats with a single kick," said by Kenichi during his mental meltdown.