Betrayed by her team and abandoned to die in a dungeon, timid C-rank hunter Cho-i Hyeon discovers a cursed ring that keeps her alive by endlessly regenerating her body. Time stretches into years as she’s killed over and over, unable to escape. When she finally does, she’s no longer the girl who was left behind. Stronger, colder, and haunted by something growing inside her, she wants answers -- and revenge. But the ring may have a will of its own, and its true cost is only beginning to surface. Whatever it is, it may already be too late to stop.

Combining reality with a gaming world where ferocious beasts roam freely, filled with numerous mysteries and dungeons. In order to defend against the onslaught of these beasts, everyone undergoes class transfers and crazily levels up. On the day of his transfer, Lu Fan becomes a hidden class – Dragon Tamer. However, due to the immense strength of dragons, it is deemed impossible for anyone to tame them, earning Dragon Tamer the reputation of being the most useless class. Fortunately, he awakens the Super Treasure Map System. As Lu Fan, with his mighty dragon, sweeps through everything, the entire world trembles.

Aizawa Yuri has reincarnated 2 times now and is dead tired of being the emperor of this and that. Using his skills he acquired a reincarnation artifact, and starts his life in a brand-new world!

The great martial artist who ended the world's calamity.
The Radiant Martial Sovereign, Wi Yeonho.

He was a nobleman, a paragon, and a peerless hero...
"That man? He was a complete and utter scoundrel."

A truth too shocking for the world to know.
The real face of history's greatest hero is about to be exposed!

Hidako Masamune is a high school student who suffers from continuous bullying by his classmates. Becoming tired of it all, he decides to commit suicide, but instead he is transported to another world along with all his classmates. When they arrive, they find that they now possess amazing abilities, but he was only granted the status of a "healer," the weakest skill of all. The king decides to get rid of him by transporting him to another far away place, but not before Hidako swears revenge against the king, the kingdom, and all of his classmates.

The infamous leader of the assassins known as the Shadows, Raon, had lived his entire life as a dog on a leash.

However, through a twist of fate, he obtained a new life—as the grandson of Glenn Zieghart, the Destructive King of the North!

He prepares to use the Ring of Fire he still possesses as an infant to begin cultivating when he's diagnosed with the Curse of Frost.

With the odds stacked against him, will he be able to finally stand on his own feet and live life by his own will, to become the strongest swordsman on the continent?

“I will slay anyone standing in my way of revenge…
even if it is a god.”

He’s in the deepest part of the Jianghu. Keep your eyes wide open if you do not wish to get dragged into the abyss.

From MangaHelpers:
29-year-old programmer Suzuki Ichirou finds himself transported into a fantasy RPG. Within the game, he's a 15-year-old named Satou. At first he thinks he's dreaming, but his experiences seem very real. Due to his use of a 3-time-use special power (meteor shower), he ends up wiping out an army of lizardmen and becoming very high level. He hides his level and plans to live peacefully and meet new people, though developments in the game story (like the return of a demon king) might get in his way.

Jack Aaron is the strongest mercenary known by the nickname “The Bomber.” After completing a heavy mission, what awaited him was a summons to another world!

In this summoning, everyone is granted a special ability. However, the ability Jack was given was quite limited: [Bomb Making]. The people who summoned him from the other world dismissed Jack’s ability as useless, and the other summoned individuals began to mock him as a useless foreigner.

To return to his original world, he forms a partnership with Alice, an alchemist derisively called "The Witch." During this process, Jack learns that the other summoned individuals, who he thought he had killed in an explosion, are still alive.

In order to return to his original world, and to hunt down the surviving summoned individuals, Jack and Alice’s worst journey is about to begin...!

Humans were suddenly summoned to become “Walkers”, and they needed to clear the tower to save the world.
Then, the “Regression Stone” was discovered. Walkers could now “return” to the past. And slowly… everyone left.

Humanity’s last hope, “Carpe Diem”, was formed by people who refused to abandon the world.
But once the last Walker reached floor 100, he no longer knew what to believe.

This is the tale of the only man who didn’t regress, despite everyone else going back to the past.

A 34-years-old NEET otaku is chased out from his house by his family. Unattractive and penniless, he finds that he has reached a dead end in life and realizes that his life actually could have been much better if he had made better choices in the past.

Just when he was at the point of regret, he saw a truck moving at a fast speed straight towards three high schoolers in its path. Mustering all the strength he had, he tried to save them and ended up getting run over by the truck, quickly ending his life.

The next time he opened his eyes, he was already reincarnated into a world of sword and magic as Rudeus Greyrat. Born to a new world, a new life, Rudeus decided that, "This time, I'll really live my life to the fullest with no regret!" Thus, starts the journey of a man yearning to restart his life.

Sozai Shuu, a working adult with a slightly weird habit of loving to collect raw materials, was transferred to another world by God after losing his life.

In order to live leisurely, Shuu wished for 『a power to live a carefree life collecting raw materials in another world.』His wish was successfully granted however, his magic power is strangely enormous, and his skill is really convenient? Seems like God misunderstood that he wanted to harvest materials from monsters leisurely so the power he gave Shuu was so incredible….

Nevertheless, Shuu does not take it to mind and freely uses his unique skill 【Detect】 in another world to search for materials, harvest them, eat them, make money off of them and lives a carefree life collecting materials.

Lina Inverse, a wandering sorceress and bandit-killer, joins forces with roving swordsman Gourry Gabriev in what's supposed to be a quick union of convenience.

Adapted from Slayers main novels 1-8,
4th volume adapted from Slayers Return movie.

One day at school, Youta Tada sees someone strange entering school. Out of nowhere this being appears next to him and makes him fall from the third floor! But before he hits the ground, he wakes up in a strange world where beings like dragons exist! Youta then meets a young paladin named Lumi and discovers that he is the only man on the entire planet, and also that its inhabitants are extremely 'weak' to his presence or more specifically, his touch. Would this be a paradise?

This is no different from ordinary villager life...
"There can be no one stronger than me in this world!"
To become the strongest, Yuria, the Sea Queen, went ashore in search of the Demon King. But when she looked at her reflection, she saw the face of a child. In exchange for her legs, she lost all her strength... Even so, still striving to become the strongest, Yuria begins a painful journey!

In a world where the Han Empire never fell, martial arts is a power used to squeeze the people dry. So when a new continent is discovered, both good and evil men alike flee to settle there and escape the tyranny of the Emperor, opening up the era of a Martial Wild West.

In the turbulent frontier, Zhang Qian is a man that reincarnated from our cushy, modern world, but his new world is nothing like the fantastical world he dreamed about from reading martial arts novels. While the martial arts in his new world are powerful, they are also too crude and lack elegance. And so Qian journeys the new continent for his dream of bringing true martial arts back to the new martial realm.

Amona, a dark summoner and demi-human who uses demonic powers,
is the newest addition to the party of the uptight priest Roni.
Everyone expected the two to dislike each other and to have nothing to do with each other.
But to their surprise, on their first day together as an adventuring party, they had a one-night stand...!

For some reason, he was invited to another world after he rolled the gacha like he usually does.
The gacha from the social game is available in his trusted smartphone.
It was a convenient and cheat tool that can give out equipment and beautiful girl characters.
He now aims to create the world's strongest army of beautiful girls in another world.

Journey to the West, but with female Wukong and muscular yet klutzy monk.

Dirty oldman isekai

Fantasy harem-comedy begins with a kind-hearted uncle who helps the weak, crushes the strong while doing some consensual seeding here and there.