月華の剣士
is a Japanese ninja from the feared and respected Kisaragi clan, whose techniques dates back from ancient history, through his ancestor Zantetsu, from "The Last Blade" series. His school is the sworn enemy of both the Sakazaki clan and Kyokugenryu Karate. Eiji is a mercenary, willing to kill for anyone so long as they pay well. In "The King of Fighters '95", Eiji joins Billy Kane and Iori Yagami in the Rivals Team as in order to kill the Sakazaki Family (Ryo, Yuri and Takuma). Eiji's team failed to reach the finals of the 1995 tournament and he was unable to get a 'clear shot' at the Sakazaki family. While about to escape and go search for them on his own, Iori Yagami appeared in front of Eiji and Billy Kane and brutally beat them, nearly killing them both.