From 87 Percent Translation:

Reiji Saeki living in the north eastern countryside town lost his life in an accident during summer vacation. .....But before he knew it, a mysterious ball of light exist in front of his eyes in a world of whiteness. Being a magician from a parallel world, that ball of light is looking for someone qualified to inherit the magic they had created to prevent it from being lost. Reiji who took on that suggestion lives in the parallel world, Elgin, with a new body and powerful magical power.

An average student got summoned to another world and granted the strongest job. 
No, not Hero, not Sage either. 

It's Inspector.
With ability to inspect anything and gather information accurately, surely this is the strongest job there is!

It has already been two years since I possessed a character in this insanely difficult game. In order to go back to Earth, I have no choice but to stop the downfall of this world and reach the ending of this game. [You have collected the body of a “pathetic soldier.” Inheriting abilities.] [Inherited rewards: Stamina +1, Proficiency +1, Dehaman’s Armored Combat (D)] I will see through to the end of this game no matter what!

Grimoire Alchemist is a dating sim popular among both boys and girls in Japan. The player’s rival in love, Claudia Ellington, is jokingly called the “Villainess of a Thousand Deaths.” But this alias of hers is actually no joke; she really does die a thousand times in the game!

Alas, our poor little protagonist ends up filling Claudia’s shoes when she gets reincarnated in the world of Grimoire Alchemist. Determined to escape the dire fate she has in store for her, Diehard Grimoire Alchemist Fan #1 (now the reincarnated Claudia) does everything she can to avoid entering the love interests’ romance routes in an attempt to separate herself from the game’s storyline and save her own skin. Despite her best efforts, she fails spectacularly as her love for the characters and game compendium of a brain lead to her pulling off impressive feats one after another.

Join her as she (much to her dismay) magnificently steals the hearts of the game's charming love interests!

The older brother, imprisoned by his sister, dies just as he escapes and is reincarnated in another world!
He thought he had been freed from his demonic sister, but now she too has been reincarnated in the same world...?

WN Raw: https://ncode.syosetu.com/n7437dj/

After saving the princesses Rio is given a scholarship to the Royal Academy, a school for the rich and powerful. Being a poor orphan in a school full of nobles turns out to be an extremely detestable situation to be in.

Pro-wrestler Shibata Genzo who's maniac pet animals suddenly was summoned to a different world. Genzo was asking by the princess to get rid of the evil beasts called monsters roaming in this world. Outraged that he was asked to kill monsters, he german suplexed the princess. Unable to get back to earth, he decided to live a slow peaceful life in this world. This is a story about an eccentric Japanese man who was a former pro wrestler and manages a "Monster Pet" shop.

Loco is a novice adventurer who begins his journey to save his sister Natty, who is cursed by a monster into an eternal slumber.

At an adventurer's guild, he meets Taiga, who was given extraordinary abilities when he was reincarnated from another world! He also meets Souya and Mia, who were also reincarnated from another world and have cheat abilities, but something happens that shocks even them!

An entertaining and poignant otherworldly fantasy featuring a party of a novice adventurer, Loco, and three reincarnated characters from another world!

Toma was transported to another world due to an accident caused by a female circle crusher. So, he made friends in the new world and rebuilt his life as an adventurer. However, then, another girl joined his party... Will his life collapse once again because of another circle crusher who also exists in this new world!?

Osamu, a young man who died at a young age due to an incurable illness. His second life was to drift as a "spirit (demon)" in an unknown world! Osamu, who is hated by humans and unreasonably deprived of his "life," hopes that he "does not want to die anymore." At that time, he gained the power of "life-sucking" that feeds on the vitality of others. In addition, he will resist the approaching "death" by using the science that he continued to learn on the bed in the previous life and the creative magic that makes the best use of his own dexterity. I met an immortal girl who was despaired by being tossed with life like myself, "--You tried to kill me, you guys are bad." In order to live, we are leaning toward the "stealing side" ...? An anti-heroic fantasy where a ghost who wants to live and a girl who can't die conflict with the world!

Web novel: https://ncode.syosetu.com/n4532en/

I died while I was reading hate comments on my novel.

I was already in shock over my death, but some 'Grim Reaper' appeared and told me that being a bad writer was a sin. To atone and make it into heaven, I was told I needed to survive past the ending in one of my novels.

And so, I entered the novel 'The Demon King is Dead'...

"Damn it all!! Why did this have to happen to me?!"

By all misfortune, the character I possesed was the Demon Prince, a character with no combat abilities—who dies at the very start of the story!!

Past the dreams there is a special world, where monsters and demons fight for supremacy, it so happens those same monsters and demons are also the objects of cult for religions in the real world. A victory in the monster world, means the success of a religion in the real world.
Wahowaho is a new religion, aiming to the top, and while searching for their god they have summoned a clueless human boy.

Toda Yuu was visiting a fan convention with his sister, he was looking forward the event for his favourite game, a phone gacha game with deities, but once he fell asleep things started to change in the real world.

The story that revolves around a bunny in a demon country

Massive spoilers of the main story

Jinguji Jo, an officer candidate of the Self-Defense Force, who had just graduated from the University of Defense, was reincarnated into a different world due to a traffic accident. The inventory had the standard equipment of the Japan Ground Self-Defense Force! Jinguji Jo's self-defense officer battle action makes him unrivaled in the fantasy world with equipment stronger than magic!!

The NEET Yamano Masaru (23 y/o) went to Hello Work and finds an interesting job offer. [A test play of the Miniature Garden "Razgrad World." Extended period of time, preferred to be able to live on site. Monthly salary of 250,000 + commission.] Immediately goes to the interview and signs a contract. However, the place of employment is another world. Because of the contract he's taken there, to survive Masaru received a cheat, but he is told the shocking truth. "This world will be destroyed in 20 years." Can a simple NEET prevent the destruction of the world?!

Takio Asakawa is an ordinary salaryman who - surprise, surprise - dies and gets reincarnated into another world. A big fan of isekai stories, Takio is immediately ready for his OP slow life adventure.

However, when he enters the other world, he discovers that not all is as it seems. Adventure guilds are a relic of the past, and income inequality has plagued the country. Technology has also progressed to the point that guns exist, making swords and sorcery fairly useless.

However, Takio discovers that he has a special skill - with slight of hand, he can steal from others as easily as breathing air. After recovering a woman who claims herself to be the reincarnation of the legendary thief Goemon Ishikawa, Takio realizes that he was brought to this world for a specific reason: to enact justice by stealing from the rich and giving to the poor.

While working overtime through several nights, I fell asleep for a short while. When I woke up, I seemed to be possessing the villain of the webnovel I was reading.

"Well, how typically cliché... to the point where I'd end up dead if I were to follow the predetermined fate. Darn it."

I need to find a way to survive.

The first way to survive as a good-for-nothing villain in the webnovel: "Convince as many people as possible to be on my side."

The second way to survive as a good-for-nothing villain in the webnovel: "Become strong enough to protect myself."

Lastly, the third way to survive as a good-for-nothing villain in the webnovel: "Never become friendly with that proud and insane 'Summoned Master'."

But what should I do?
Even before I possessed this body, the original owner already caused an incident.

"Use your money to kill the 'Summoned Master' who has yet to regain his power? Are you crazy? Then who will stop the Demon King?"

This is the beginning of the modern-day survival + dungeon-raider fantasy story of Choi Yu-Seong, the possessed villain who wants to live a laid-back lifestyle!

<This is the webtoon version of the author So Yu-Hyeon's popular webnovel, "Trapped in a Webnovel as a Good-for-Nothing".>

“I will have the 1,000 people I have chosen go to a parallel world.”

Chaos spread once those words of God were displayed to the whole world.

Kurose Hikaru, whose childhood friend had been chosen, was killed together with her on the same day she was supposed to be transferred. However, for some reason, Hikaru didn’t die and, even though he wasn’t chosen at first, he ended up as one of the [Otherworlders that will have all their actions live broadcasted to Earth].

Transferred without any preparations at all to that accursed land, he faced threats innumerable times and somehow managed to survive with his Gift, the Dark Spirit Abilities.

“I must not die. I am sure the people on Earth are all rooting for me after all…”

This is the story of a young boy who is tossed about by the gazes of the viewers, yet eventually manages to raise his head and walk forward.
(NovelUpdates)

By the time she realized it, college student Mari Toujou had fallen onto a battlefield. Looking around in confusion there was a large crowd of knights clad in western armor. They called Mari “Her Majesty”. It appears that she was in the middle of a war and her forces were at a disadvantage. Certain that this was a dream, she worked out a plan and achieved victory but… somehow, she had really replaced the queen!? What she understood after was that the origin of the war was the queen’s misgovernment and that she couldn’t return to her original body. So Mari decided to reorganize the ruined country–? Drawing the truth of the tracks of love, it’s a miracle fantasy!

After winning the battle of Katze Plains and founding the Sorcerer Kingdom of Ainz, they aim for a utopia of perpetual continuity and prosperity, a world where many races kneel before Ainz. As the first step toward achieving this goal, Ainz heads to the Empire to strengthen the Adventurer’s Guild and incorporate it into the state. Behind the scenes, the nations of the world are beginning to stir with their own agendas for the Sorcerer Kingdom...! Ainz's high road, once again!