A 2019-to-present light novel series written by Yushido (shimizumfj) and illustrated by Toosaka Asagi. There is a 2019 manga adaptation with art by Keigen Hichou. There was an anime adaptation announced in 2021. The RPG game has been announced in April 23 2023 in G123
English Title: The Demon Sword Master of Excalibur Academy
A thousand years ago, the Undead King, Leonis Death Magnus, sealed his own body with a powerful barrier and cast a resurrection spell on himself. He shall rise again in one thousand years to conquer humanity for that is the mission given to him by the Goddess of Rebellion.
In the present time, a young girl named Riselia Ray Crystalia stumbled upon the ancient ruins of Leonis's mausoleum. Accidentally undoing the seal, Leonis awakens after his thousand-year slumber in the body of a ten-year-old human child. Mistaken to be a refugee of the Voids, Riselia takes Leonis into her care and Leonis begins his mission to uncover what has happened to the world while he slept.
- Leonis Death Magnus
- Lyseria Christaria
- Elfine Phillet
- Regina Mercedes
- Sakuya Sieglinde
- Blackas Shadow Prince