8823-senpai

A delinquent in year 2 who is regarded as a model by other delinquents. He is handsome and smart, and, unlike most delinquents, he respects honor. He manages to drag Sakamoto into a duel with him, but is finally moved by Sakamoto.

He is currently aligned to Sakamoto after long-time delinquent Fukase damaged his noseline during the cultural festival. It reveals that he is the eldest brother who showed concern on his siblings and his estranged father. Hayabusa was the last person that Sakamoto met before he left for America and the former suspected his reason of departure as a lie despite Sakamoto denied it as such.
(Source: Wikipedia)