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]]. An anime adaptation aired in October 2023. An RPG game was been announced in April 2023.

English Title: [i]The Demon Sword Master of Excalibur Academy[/i]

h4. Synopsis

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.

h4. Characters

h6. Main Characters

* [[Leonis Death Magnus]]
* [[Riselia Ray Crystalia]]
* [[Elfine Phillet]]
* [[Regina Mercedes]]
* [[Sakuya Sieglinde]]
* [[Shary corvette]]
* [[Blackas Shadow Prince]]

h6. Supporting Characters

* [[Altiria Ray O'ltriese]]
* [[Clovia Phillet]]
* [[Fenris Edelritz]]
* [[Rivaiz (seiken gakuin no maken tsukai)|]]
* [[Roselia Ishtaris|]]
* [[Schwertreite (seiken gakuin no maken tsukai)|]]
* [[Tessera Lilybell]]
* [[Veira (seiken gakuin no maken tsukai)|]]

h4. External links

* "Official Site (light novel)":https://mfbunkoj.jp/product/seikengakuin/321812000465.html
* "Official Site (manga)":https://web-ace.jp/shonenace/contents/420/
* "Official Site (anime)":https://seikengakuin.com/
* "Official Twitter":https://twitter.com/seiken_maken
* "Wikipedia: The Demon Sword Master of Excalibur Academy":https://en.wikipedia.org/wiki/The_Demon_Sword_Master_of_Excalibur_Academy
聖剣学院の魔剣使い せまつか