Character
Koichi Hirose
Koichi Hirose in JoJo's Bizarre Adventure (2012), played by Yûki Kaji.
Koichi Hirose (広瀬 康一, Hirose Kōichi) is one of the two deuteragonists (along with Okuyasu Nijimura) featured in Diamond is Unbreakable and appears briefly as a minor character in Vento Aureo.
Read more about Koichi Hirose on JoJo's Bizarre Wiki at Fandom