Hagane is Jin Arizuka's follower. His purpose of joining Ragnarök seems to merely due to his wish of proving himself. He called himself an improving genius, but is actually simple-minded. Jin was disappointed about him since he could not think of more than three variations with his battle axe. Hagane took part in the second battle of Ragnarök, where he first encountered Momiji Satomura and Nagisa Suzushiro. He was able to beat Momiji since her Magic was a great disadvantage against Hagane's power-type Magic.