Yuuta Maruyama (丸山優太, Maruyama Yuuta) real name Yuuta Kunimitsu (国光優太, Kunimitsu Yuuta), better known within the Hyoho Niten Ichi-Ryu as Shadow Warrior (陰武士, Kagebushi), is a human with Shinigami powers. He is the adopted son of Syuusuke Maruyama as well as the brother of Hikari Maruyama. As the only son of the Maruyama Clan, Yuuta is expected to carry out whatever his teachers and parents say.