Haruhiko is the son of Kiyotsugu Kamiazuma. He is a major playboy, although his confidence with his own attractiveness is usually shown to be rather exaggerated, making him serve mainly as a comedy relief. He has a scar on his back since his childhood, that was made by Yumiko´s daughter, Touka, who went insane and wounded him with the Stone sword. Although, it was shown that Touka had feelings for him and he also cared about her.