The Demon Lord Maid and the Heroic Butler.

I am a Demon King. My name in my previous life was Agarfia Vitalievna Rogofskaya. I was the Demon King who ruled over Izridge Continent—the sole land surrounded by the azure sea. My name in this life is Anna. ◆Anna, who was a Demon King in her previous life but now lives as a maid, makes daily efforts as an educator to raise her young lady to become the "next Demon King." However, the "Hero" who defeated her in her previous life comes along. A story about a maid Demon King and a butler Hero working hard to help their young lady, who is on the verge of being made into a villain, while living their lives as a maid and butler.