The Demon Sword Master of Excalibur Academy, Vol. 1 (manga)

One thousand years ago, Leonis Death Magnus, undead sorcerer and thegreatest ofthe Dark Lords, entered magical stasis during a climactic battle.When he awakens, hefinds a beautiful silver-haired young woman named Riseliastanding before him.Moreshockingly, Leonis has been transformed into aten-year-old boy!Now he’ll have toadapt to this strange era and dealwith the twisted monsters called Voids—all whilekeeping his truepowers a secret from his lovely new guardian.