Devil King

Devil King (魔王): A cursed armor said to turn its wearer into a warrior demon. It is invulnerable to arrows and bullets and can use its opponent's feelings against themselves. When Jiraiya approached the Devil King by lowering his fighting spirit, the Devil King's sword proved to be of no use at that moment. After Kurozaru is defeated, the Devil King is sealed away from the rest of the world once again.