From Kodansha:
When she was still just a girl, Kotoko was kidnapped by yokai. These spirits made her into a powerful intermediary between the spirit and human worlds, but this power came at a price: an eye and a leg. Now, years later, she watches out for dangerous yokai while developing feelings for a young man named Kuro, who is also special: an incident with a yokai has given him healing powers. He's surprised when Kotoko asks him to team up to handle renegade yokai, preserving the thin line between reality and the supernatural.

There is a world where there is no end to those who seek spirits and those who hunt spirits. In this world, there was a baby who was abandoned by his real parents as a detester to black hair and black eyes. The name of this child is Wilm. Picked up by the spirits, he grew into a summoner who protects his beloved sisters and the beloved village.

"I won't tolerate the guy who dares to touch my family!"

The blunt and summoned beast sisters shake the world. An exhilarating summoning battle fantasy begins now!

The son of the world's top assassin organization leader, Doyul, has transferred to a Korean high school!

Coming in with nothing, Doyul takes on a request from Dong-gu, a victim of school bullying, and begins taking down the local delinquents one by one?!

The story of a man who rises to become the strongest in the War Against Bullies universe!

Gamin Yoon, a 17 year old student, goes to a school known to harbor future criminals. Stuck in a carnivorous environment where only the strongest survive, he struggles to get good grades to enter a 4 year university. But, will he be able to study well enough to enter university, or will he get involved in the unending fights around the school?

Gu Zhangge was transmigrated into Xuanhuan World. The moment he was transmigrated, he saw many models surrounding the Lucky Male Protagonist and he really show hate him. Even the Female Protagonist was hugging him which lead to many jealousy among the VIP guest who witness it. Since I am more powerful and higher in status than him, destroying him would be very easy, but wait, there is a system here which allow me to receive some of his luck. Gu Zhangge smile to himself, it looks like I will be derailling from the path of the Heavenly Destined Villain more and more!

“Please teach us naughty things.” One day, Itsuki is transported to another world, where he is confronted by sisters who serve the goddess. In order to return to the real world, he must give them practical sex education!

If you want to live, find him. If you don't want to die, don't go near him. He is the greatest doctor and the strongest hero, the legend of the underworld--Under Doctor Haiji. Medical drama x heart-pumping action!

After dropping out of school, Kwon Daegun is preparing for his qualification exam. While working a part-time job in a convenience store he got into a fight with some thugs. Daegun, who easily overpowered them, is offered a project called “Iljin in Charge/The Bully In Charge” by the Educational Foundation, which has been closely watching him for a long time. He, who accepted the offer after much consideration, enters a high school that belongs to the foundation and defeats the core bullies of this school one by one according to the order of the foundation.

Wang Dokpil, the boss of Jeolhwa, the largest organization in Chungcheong, and his son, Wang Dam. After his father’s death, Wang Dam has a different dream than inheriting his father’s organization and decides to head to Seoul on a whim. But life isn’t that simple, as he envisioned his uncle, who was a member of the organization, proposes a condition that if Wang Dam becomes No. 1 in his new school, he’ll receive a settlement allowance. However, Wang Dam’s new school, notoriously known as Ppak High, is infamous for school violence. Can Wang Dam become No. 1 in Ppak High School, the one full of the nation’s worst troublemakers?

The worst student of Westrod Academy, the disgrace of the Blake House.
A new soul enters the lifeless body of Frey Blake, the boy who couldn’t handle his painful life and chose death instead.

“What’s with this body?
I’ll have to check every little detail of it.”

The Great Mage Lucas Traumen.

He earned his chance at revenge by gaining the flesh and bones of Frey Blake the disgrace!

And now begins the interesting adventure of the Great Mage who returned after 4000 years!

The strongest doesn’t need any cheats!

Haruka, who spends his high school life a loner, was suddenly summoned to another world one day along with all his classmates.

When ol’ God enters the picture, Haruka believes he can just choose whatever cheat skill he wants to help him survive in the new world...
But, contrary to his expectations, that list of cheat skills works on a first come, first serve basis. And so, his classmates pick out all the cheat skills.

His choices now limited to leftovers, Haruka finds himself incapable of assembling a party due to his own “loner” skill.
Even though it’s a different world, it seems his adventuring days will be, as per usual, a solitary affair…

After becoming aware of a crisis looming over his classmates, Haruka makes a silent vow to save them. No relying on cheats!
He will walk a heretical path of strength that transcends the need for them.

The curtain rises on the strongest loner’s otherworld strategy guide!

D-Rank non-combat raider becomes a great enemy of god that will save the world with the strongest restoration item.

If the Grim Reaper calls your name three times, you will be taken to the underworld.

"Hyeokyeon Mugang."
"Hyeokyeon Mugang."
"Hyeokyeon Mu..."

You little shit! I want to live longer! Get out of here!

I desperately swallowed the Herb of Immortality, and to my surprise, I actually lived! When I finally opened my eyes, thinking it was all a dream... I was surrounded by a bunch of old guys?! I asked where am, and—the Shamans' Mountain?!!!!!!!!

Somehow, I possessed the body of a pitiful errand boy... this is nuts!

I... I am... I am the strongest of the strong, the head of the Sa Clan, Hyeokyeon Mugang!!! Why am I now part of a clan of Shamans?!

Well, since I'm here, I might as well become the best disciple I can. The trashy master's ruthless, no-holds-barred, immortal martial arts story "Path of the Shaman" begins!
Links:
Original Webnovel: https://page.kakao.com/home?seriesId=52882308

Webtoon Trailer: https://www.youtube.com/watch?v=b-xR7KBYvhk

The one and only weapon to take down the Dark Lord.
The Holy Sword.
And the Warrior who lost it…
Warrior seeks and seeks until he finds the Holy Sword.
10 years, 20 years, 30 years… From the Dragon’s Nest till the Spirit King’s Hideout
The Warrior seeks the Holy Sword still to this day.

[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.]

When he woke back up, he had regressed back in time. Given a second chance, he swore to himself to stop the fall of Korea and humanity and take flawless vengeance against those that ruined things in his original timeline.

Follow the journey of Korea's Martial Saint, Sung JiHan, as he struggles to prevent a future of destruction and ascends as the Martial God!

After dying due to an unexpected accident, Kim Yohan reincarnated as Johann Aitz of the prestigious Aitz Family.

He may have been born a noble, but Johann Aitz ranks at the very bottom of the family hierarchy. To make matters worse, this world revolves around a ruthless medieval society.

“The only person you can trust is yourself.”

In a world ruled by the law of the strong, survival requires only two things: money and power.

While training relentlessly using the knowledge he gained in his modern life, Johann ends up encountering Kaegal, the Master of Poison of the Empire’s greatest assassination guild, the Nesos Guild.

This is the fierce struggle of Johann, who refuses to become just another prey of this brutal era.

Asato Kanami who was summoned as a hero to another world Istalia.
To stop the war between the demons and humans
It is said that he was summoned by Anna, the saint of the Kingdom of Elshnon.
After a year of war, Asato finally challenges the Demon King Lione.
Just when he thought the battle was over, his summoner Anna attacked him and the Demon King.
Asato who survived the attack and was protected by the Demon King.
What is the future path for the hero betrayed by humans...!?

Though Ayase Yuu is the son of a renowned and talented actress, he is below average in anything he does. He is entrusted to live under the care of his mother's friend, and later discovers that he will also be rooming with the three sisters from his school who possess both beauty and talent. Though Yuu thought that an understanding would be impossible to reach between an ordinary person and those blessed with talent, the three sisters are surprisingly...?!

A 18-year old-Japanese otaku from Tokyo runs into a cute and lost Chinese cyclist. He offers her to lead the way, and she gladly accepts. But what happens when her destination turns out to be Kyoto instead of the sports stadium he thought of? Will the Chinese he learned from anime be enough to communicate, and moreover where will this unexpected journey lead them to?

In a world where humans sell and buy otherworldly species as slaves, the great mage Rifenhardt is treated like the Demon King for helping the otherworldly species.

A party of heroes arrive to bring down the Demon King! Rifenhardt succeeds in greatly injuring the heroes, but he faces death at the hands of... the Martial King Tesslon!

"Time and Space Regression Spell."

However, Rifenhardt miraculously manages to cast this last-resort spell and regresses to the past. But...

“Who are you?”

He awakens reincarnated in the body of the continent’s strongest physical warrior, Tesslon!

Now begins Rifenhardt's adventures as both a great mage and the physically strongest man to change the world!