The Demon King is a Shota!

With heroes at the gates, the Demon King was forced to flee to another world in order to protect his life—losing a large portion of his magic and the majesty of his demonic form in the process. o(TヘTo)

Too bad he had less than a day of safety in this strange new world called “Earth” to enjoy, when he was suddenly summoned back to the other world alongside two local teens! When the three arrived, they were greeted with the chorus cry of:

“Please! Save us from the Demon King—eh, what’s that child doing here?!”

Nothing at all! The former Demon King from 300 years ago has decided to retire!

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There is no romantic thread in this story. Do not misinterpret the title. It's the slice of life story of an ancient demon king who retires as a child.