Masahiko Nakahara(中平正彦Nakahira Masahiko) is a mangaka from Kōchi City, Japan. He is best known for his numerous manga adaptations of the popular fighting game series Street Fighter. Two of Nakahira's original concepts for his Street Fighter manga, the character of Evil Ryu (Ryu's possession by the Murderous Wave(殺意の波動Satsui no Hadō) and Karin Kanzuki (Sakura Kasugano's rival) were adapted into later video games.