Hironishi is a student at Kyoto Fushimi High School and a member of the Kyoto Fushimi High Bicycle Club. He is a minor character that appears during the second Inter High arc of the story. Hironishi thought that he was going to compete in the Inter High as Kyoto Fushimi's sixth member, but this spot was stolen from him by Kishigami Komari. Unfortunately, he had already invited his friends and family to come watch him race, so being kicked out of the competition is an unpleasant surprise, even the his teammates. Midousuji's reasoning is that he was never good enough to be a competitive member in the first place, because he could never keep up in practices, that he is even more worthless than a small fry.
Hironishi has short, dark hair cut close to his scalp and thick eyebrows.