The Demon Sword Master of Excalibur Academy, Vol. 1

One thousand years ago, Leonis Death Magnus, undead sorcerer and the greatest of
the Dark Lords, entered magical stasis during a climactic battle. When he awakens, he
finds a beautiful silver-haired young woman named Riselia standing before him. More
shockingly, Leonis has been transformed into a ten-year-old boy! Now he’ll have to
adapt to this strange era and deal with the twisted monsters called Voids—all while
keeping his true powers a secret from his lovely new guardian.