anime/manga Hanasaku Iroha Kōichi Sakakibara, the main protagonist of the series Another Koichi Hirose, a character from the manga JoJo's Bizarre Adventure Koichi Kizakura, a character from the anime Danganronpa 3: The End of Hope's Peak High School Koichi Haimawari, a character from the manga Boku no Hero Academia Koichi Adachi, a character and main party member from the videogame Yakuza: Like a Dragon Japanese masculine given names