Anime Crossover: Dio's Record of Becoming a Hero

The dragon slayer eventually becomes the dragon.

The Four Holy Heroes who defeated the Demon King abandoned their heroic hearts and began doing evil.

The balance between good and evil was thrown off, and the natural order collapsed.

To restore the balance and protect the multiverse, the Goddess decided to summon a man, have him transmigrate to another world as the Demon King, and kill the Four Holy Heroes.

Dio was summoned. With the bearing of an unparalleled Demon King and a cautious nature, he arrived at the Demon King's castle in another world.

The wicked heroes, the breathtakingly beautiful elf, the lively princess, the seductive succubus, and the stunning saintly mage.

I, Dio, will defeat you, conquer you, and rule over you!

This novel and its characters are entirely fictional. Any resemblance is purely coincidental. Do not imitate.