Koichi was an interesting character in the roster of the tiny town known as Morioh, finding himself in some hair-raising situations, especially thanks to his future girlfriend, Yukako Yamagashi, who ...

Koichi Hirose is one of the protagonists from the fourth arc of JoJo’s Bizarre Adventure: Diamond Is Unbreakable. When we first meet him, he is a meek, reserved student without a Stand, but as the ...

Much like Bruno Bucciarati was the brains assisting Giorno in taking down the Passione mob, led by the devilish Diavolo, Koichi was the mind that helped out Josuke and his Crazy Diamond Stand take ...

Bandai Namco has released the latest in its series of battle trailers for JoJo’s Bizarre Adventure: Eyes of Heaven. This time, we’re introduced to Koichi Hirose from Part IV: Diamond is Unbreakable, ...

Akira Otoishi, an antagonist from Part IV: Diamond is Unbreakable, and Koichi Hirose, one of the same part’s main characters, will be playable fighters in JoJo’s Bizarre Adventure: All Star Battle, ...