The Best Assassin, Incarnated into a Different World's Aristocrat - Episode 13: Assassin becomes a merchant

A mysterious teenager who had lost his past, awakened in Tianlong Continent. Mistaken as the Ye family’s Son, he used this identity to observe this chaotic world and to search for his past self, but only to find an inevitable and terrible fate, therefore he indignantly laughed at his destiny, and revealed his prowess to rule the lands under the heavens.

Since then, the air and the clouds moved with his hands, and even thunderstorms were subject to his palms! He, as the fairytale’s main character, had shocked the people of Tianlong Continent with his legendary prowess and intelligence, but the extent of his powers were still unknown.

- Description from novelupdates

Everything functions in a cycle, be it an ant, bird, lion, human, or even a celestial body.This cycle initiates with one's birth and governs one's end, yet there exists the potential to surpass it.Among the billions of planets floating in the cosmos, destined to merely occupy a void, some have the capacity to ascend, reaching new dimensions, standing shoulder to shoulder with realms like Heaven and Hell.---Vlad, a young man, found himself ill-fitted in a world that scarcely offered him any luck, weighed down by a mysterious secret that initially seemed more of a burden than a boon.Yet, the powers he had dismissed as trivial eventually became his most formidable strength when the apocalypse broke, unleashing literal pandemonium as angels and demons walk among the human race.

Another entry in what you can call the Proto Harem Series: the books written before the Harem Series that take place in the same world.

It’s about a swordswoman whose student is captured, so she goes to rescue her.

Strength.... That's all that matters in the end.

After being abandoned by his own family, and shunned for having no mana in a world dominated by magic, ex-prince Arvell Relas Vispia was forced to live on the streets with whatever meagre money he had left.

However, fate had something else in store for Arvell.

After meeting the spirit inhabiting his amulet, Arvell gets reborn as a Nephilim.

A being that has the powers of a god.

Time, Space, Life, Death.

All submitted to the authority of a Nephilim.

Betrayed by those he once called family, Arvell swore to get revenge.

Revenge on all those that mocked him and shunned him as a 'failure.'

Revenge on those who betrayed him without a second thought.

This is a tale of how a young prince shunned by the world as a 'failure' rises and ascends to the pinnacle of strength.