Henkyou Gurashi No Maou, Tensei Shite Saikyou No Majutsushi Ni Naru

Henkyou Gurashi no Maou, Tensei shite Saikyou no Majutsushi ni naru : There was a mage called ‘The Lone Demon King’ at the frontier.He was just a creature that never grew old, but he was loved by the villagers as something of a guardian deity.However, he was destroyed