From Easy Going Scans:

Chang An in the Tang Dynasty of China (618-907): The demon star is passing through the sky, calamity is about to befall the Tang Dynasty - because of a woman.
Skilled in martial arts and war tactics, Princess Li Chang Ge sets out to avenge her family and take back the throne.

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.

The game has emerged into reality, the rules of the world have been turned upside down and humanity has entered the era of becoming players with the world set as a game stage. The only way to become a player is by leveling up to become stronger! The only way to rise to the top of the world! On the day of world fusion Lin Moyue chose to take on the sole hidden class, Necromancer. From then on, Lin Moyue would not die until his summoned creatures died out. “I sit on the throne of bones as the God of the dead and walk between life and death.” “I am a walking catastrophe!”

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?

Satan Rchimedes returns to the earth after being sealed for one thousand years by a hero. The King tries to seal Satan once again by dispatching descendants of the hero. However, it's troublesome to find the genuine descendant, so the king chooses 75 hero-like people. This is the adventure of Alba, hero no.45, and his monitoring fighter Ross.

People called “challengers” are gambling their life trying to escape from The 100 Story Tower to win 10 billion yen. But what will happen when Tatsuki Kuroumi awakes at this tower without remembering anything about his prior life, including entering the tower as challenger?

Seth is an apprentice sorcerer from the Pompo Hills. Like all sorcerers, he's an "infected", one of the few people having survived an encounter with a Nemesis, those creatures falling from the sky and destroying everything around them. Being immune to them, Seth wants to become a Hunter and fight the Nemesis. But what Seth really wants is to find the source of all Nemesis, the Radiant. Helped by his fellow sorcerers, he will seek the Radiant, under the harsh scrutiny of the Inquisition...

The legendary hero Ryuto, who vanished into the depths of a Dungeon to subjugate the Demon King, wandered inside for 20 years before returning to the surface. However, the world he returned to was one where the male population had plummeted due to the Demon King's curse, and women's sense of chastity had drastically changed.

Every woman he meets is a beauty, and what's more, they all approach Ryuto. While Ryuto unintentionally charms those around him and causes commotions, he senses the shadow of the Demon King in the monsters emerging from the Dungeon and throws himself back into the battlefield.

The strongest (virgin) magician's harem fantasy begins!

The warrior Hamel went on an adventure with his companions to defeat the Demon Kings, but after dying just before the final battle with the Demon Kings….

“Waaah.”
‘What the fuck!’

He was reincarnated as the descendant of his fellow warrior, Vermouth.
Hamel — no, Eugene Lionheart was reborn with the blood of the Great Vermouth.

‘My previous body held enough talent to be mistaken for a genius, but this one… there’s just no comparison.’

With a body that had higher specs right from the start, he showed explosive growth that far surpassed what he had achieved in his previous life.

Along with the unknown reasons for his reincarnation came the uneasy reality of having to coexist with demons.
He was faced with a world that made him question everything he had believed in.

Gifted with this extraordinary body since birth, as Eugene, he begins walking down the unfinished path from his previous life.

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.

Humanity’s home is no longer Earth. Intersellar travel is now a common occurence, and technology has replaced blood and flesh.

Luka, who grew up in the slums, has turned fifteen and taken the selection exams. His aptitude is of the Imperial Guard.

Due to the Gear Expansion, witches who had been friends with the people become unnecessary. Humans, who were afraid of unscientific powers, begin a witch hunt… And a human boy who has his beloved witch killed becomes the “Wizard of vengeance”.

Daisy von Preslaria, born in a viscount family that produces excellent magicians, was the only one in the family that was granted the failure job, Alchemist. Since this has happened, she's going to try studying hard and becoming independent as a worthy alchemist! The five-year-old girl so resolved and began to make potions by trial and error. Thanks to the Appraisal skill that she secretly possessed, let alone failures, her finished products were of such high quality never seen anywhere! She cultivated medicinal herbs, indulged herself in research, went harvesting, and opened a store.

Zhuo Yifan was a magic emperor or could be called a demon emperor because he had an ancient emperor’s book called the Book of the Nine Secrets, he was targeted by all the experts and he was even betrayed and killed by his students. Then his soul enters and comes back to life in a family servant boy named Zhuo Fan. Because some demonic magic is holding him back, he must unite the child’s memories and cannot ignore the family and the mistress he serves. How can he lead this descending family back to the pinnacle of this continent!

Alicia is an orphan living in Ciel, a world of swords and magic. One day, she discovers that she is "the heroine of an otome game." Even the death of her parents was simply part of the story.

Alicia decisively rejects the heroine's role as "nonsense." Taking the name "Aria" as an adventurer, she gradually grows into the "Ash-crowned Princess of Slaughter" who wields multiple weapons and magic!

But, when she receives a request to escort a "villainess," without realizing it she finds herself caught up in the stage of the game where nobles struggle against each other...?

"I am 'me.' I'm not a character in a game!"

I’m the crown prince? The frail and sickly crown prince in the novel? But I’m a traditional Korean doctor who specializes in medicine. I guess it can’t be helped. Reforming internal constitution, recovering of energy, invigorating vital energy, and increasing vitality. I’ll take care of my body from now on.

Young Woo Shin, Username: Grid.
In the words best virtual reality game <SATISFY>, bad luck always revolves around him.
But he stumbled across a job during a quest, the strongest legendary job out of over 2 billion players!

Shinobu Iijima lost his life along with his beloved sister and prickly stepfather in a mysterious disaster.
When he woke up, he was reborn in the world of the game he had been playing.
Shinobu was in despair as his stepfather erased his game data and he had to start from the tutorial, but he learned that his sister would soon be reincarnated into this world as well.
In order to stop his father-in-law, a top player who was after his sister's body, he embarks on a painful path to become the strongest...!

I possessed a third-rate extra villain character in my favorite game. I have no ambitions and I just want to live a quiet life. But sheesh, this world is a hard place to survive in. I will survive to the ending of this story, in a way the protagonist cannot. I will survive in the way of a third-rate villainous character.

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.