Fantasy

He is a successful writer who has created a fantasy world in his novel. But he made a terrible mistake in the end, causing the protagonist to reveal himself as a traitor and the world to be dominated by the demon king. He received the wrath of readers and regretted his choice.

After being sealed away for 1,000 years, the War God Duan Yuxian has come back to a world that has forgotten him and his malevolent past. As he wanders aimlessly through the central plains ruled by the martial world, he comes across a dying little girl named Xiaomei and revives her out of pity. Although they try to live in peace as a family, the factions of the martial world refuse to let them be. Now, Duan Yuxian has no other choice but to remind them that the War God has truly returned.
Chronicles of a Returner
Chronicles Of The Martial God

Shinobu Iijima lost his life along with his beloved sister and prickly stepfather in a mysterious disaster.

"I Can't do this anymore!" Yuke Feldia, a red mage, just left his adventurer A-Rank party. After being mistreated as a handyman and ridiculed for five years, he finally snapped! And so began his desolate, unemployed life or so he thought!
Through a stroke of luck, Yuke is welcomed into an all-female adventurer party comprised of his former students!! As they defeat dungeons one after another, Yuke's strength is gradually revealed! As it turns out, this red mage wields extraordinary magic and skills?
A party of the protagonist who is a skilled supporter x newbie

Gucheongugeom
Heavenly Inquisition Sword
L'Épée des neuf cieux
Nine Heavens Swordmaster
九天究剑
九天究剣
九天究劍
구천구검

Alexander, whose hometown was destroyed by the demon race, fought with the Demon King and was killed. But instead of the afterlife welcoming him, when he opened his eyes, he was reborn as the Demon King’s son, Jilbagias!? While hiding his true identity, he stains his hands with atrocities as he conducts himself as the ideal demon prince, increasing his power to ultimately overthrow the Demon Kingdom…

“Choi Si Woo is always conscious about his weight.”

Until one night during his jog, he comes across an old man. In the blink of an eye, the old man covers Choi Si woo with the straw backpack he’s carrying.

After opening his eyes, Choi Si Woo then finds himself in an incredibly vast abandoned Hanok (Korean traditional house).

At the edge of the spacious courtyard, numerous black shadows surround them.

The old man spoke to Choi Si Woo, who is confused and has no idea what is going on.

Everyone between the age of 15 and 25 worldwide is required to participate in the death game of twenty rounds. The main character starts his 100th challenge thanks to his ability to regress. Having experienced the game 99 times beforehand, he is able to become overwhelmingly more powerful than anyone else. Once he realizes that the condition of the last round is to have at least five people, he starts to take in party members in order to avoid repeating his past mistakes.
The 100th Regression of the Max-Level Player
만렙 플레이어의 100번째 회귀

[NO. 4212: 'Humanity' has failed the Demotion Match.]
[NO. 4212: 'Humanity' has been deemed useless. Beginning deletion.]

As Earth was being erased after their final game ended in failure, Martial Saint Sung JiHan managed to resist deletion and saw messages pop up in front of him.

[To think someone would be able to resist being erased.]
[Let's give him an opportunity to re-challenge.]
[Player 'Sung JiHan' is returning to the time of initial entry in The League.]

A white mage who was exiled after being handed a knife in an SSS rank dungeon. Due to the curse of Yggdrasil, he overcame his weak point, lack of magical power, and became the strongest in the world, SSSランク・ダンジョンでナイフ一本手渡され追放された白魔導師:ユグドラシルの呪いにより 弱点である魔力不足を克服し世界最強へと至る

Rei, a white mage who belongs to an A-rank adventurer party, is expelled from the party as a useless person who cannot move after using Heal once. Only one dagger was handed over.