In Episode 11 of Fist of the North Star, Rei, voiced by Yuichi Nakamura, fully enters the story alongside Mamiya and the battle with the Fang Clan. Fans buzzed over Nakamura’s rare female voice and the Nanto Suicho Ken technique.

Episode 10 of Fist of the North Star sees Kenshiro stalk Jackal like a horror-movie killer, face the monstrous Devil Rebirth, and end with the first appearance of Rei, voiced by Yūichi Nakamura.