I Become a Rogue Lord in a World Where Only I Level Up - Chapter 76

Though it may be a dream weathered, crumpled, fading,I held on without surrender.Through each repeated day, running toward tomorrow’s light,I became a knight, resolute and bright.

Amidst an ordinary stroll home, Jake is struck on the head by a mysterious object, plunging him into unconsciousness. When he opens his eyes, the world has transformed. Now, reborn into a newborn in a magical realm, Jake grapples with the surreal fusion of past and present. Navigating the challenges of infancy, he discovers latent magical abilities tied to this extraordinary reincarnation. As the threads of his former life intertwine with his newfound existence, Jake must unravel the mysteries of his past to fulfill a destiny that spans realms and confront the enchanting and perilous journey that awaits him.

[The Demon King is Dead], a story in which the Demon King got immediately killed in the Prologue. I became the ‘Demon Prince’ of said novel.

…Help me.

The doomsday fell upon the earth when a dragon coffin sealed under a snow mountain for ages shifted, and the civilization of gods and devils began. The whole universe turned into a fantastic new world where everyone could rise to the top through cultivation. A lucky young boy seized the opportunity, and started his journey to be an overlord in cultivation.

- Description from Novelupdates