I created my own system - Chapter 294: Alternative

Naofumi Iwatani, an uncharismatic Otaku who spends his days on games and manga, suddenly finds himself summoned to a parallel universe! He discovers he is one of four heroes equipped with legendary weapons and tasked with saving the world from its prophesied destruction.

As the Shield Hero, the weakest of the heroes, all is not as it seems. Naofumi is soon alone, penniless, and betrayed. With no one to turn to, and nowhere to run, he is left with only his shield. Now, Naofumi must rise to become the legendary Shield Hero and save the world!

“Rebirth in the 90s: The Counterattack of the Delicate Wife” is now available, please support it, dear old and new readers.Bai Xiao was reborn in 1985, back to when she was 18 years old during the release of the college entrance examination results. Her grandmother and uncle, afraid she would break free from their control, had hidden her university admission notice. Nobody would dream of stopping her from attending university this time. In her past life, her soldier brother and married sister protected her; this life, she would protect them.Chen Shimei's trash father, stepmother, and stepsister can all step aside, I don't know you.When she resolutely jumped into the river, that person... this isn't murder, sister is reclaiming her special ability from her past life.A certain man: Whether it's suicide or murder doesn't matter, you owe me a life-saving debt. Marry me in return!

He rose from abjection and achieved eternity in glory.
He embraced the prettiest beauties and killed the strongest opponents.
He was able to shift the clouds into rain and cover the sky with one hand.
He could overrun the entire world and go anywhere as he pleased.
He pacified wars and held the world in awe.
He was matchless in the world.
However, his hair turned white overnight for his beloved woman and he was on the verge of death.
He was surrounded by enemies who were trying to take his life.
He struggled his way to become mighty and fought for everything he cherished.
For this age, he was the only king of the Dark World.
His name was a byword for might.
As a man living in the world, his only ideal was to pursue brilliance.

- Description from Novelupdates

A boy awakens alone in the Fairy Tail world, lost and uncertain. As he ventures through this magical realm, he unravels the secrets of his mysterious new identity, unlocks hidden powers, and carves out his destiny in a land brimming with wonder, danger, and limitless adventure.“Check out my other work, Reincarnated as Ash: A Pokémon Tale.”