Kosuke found himself in a whole different world. WHAT?
Standing there with the wilderness to the east and a forest to his left, he decided to make good use of the occurrence, and tests his knowledge, to where he finds this amazing crafting ability, just like the games from his orginal world!

In a distant place, on a certain mountain, a young dragon has been captured by a beautiful female tiger. The two, who were predator and prey, begin a journey to find a way for two animals with very different life spans to live by each other's sides.

TL;DR: Tiger Woman x Dragon Boy

Before the Pirate King was executed, he dared the many pirates of the world to seek out the fortune that he left behind in one piece.
As a child, Monkey D. Luffy dreamed of becoming the King of the Pirates. But his life changed when he accidentally gained the power to stretch like rubber...at the cost of never being able to swim again! Now Luffy, with the help of a motley collection of nakama, is setting off in search of "One Piece", said to be the greatest treasure in the world.

Note: The best-selling series in manga history.

Was a finalist for the Tezuka Osamu Cultural Prize from 2000 to 2002. The German translation of Vol 44 won the Sondermann audience award at the Frankfurt Book Fair Comics Centre in 2005.
Won the 41st Japan Cartoonists Association Award Grand Prize alongside Neko Darake in 2012.

One day, Sylva realized that he reincarnated into a mob soldier from the game that he was hooked on in his previous life. Even though he utilizes his game knowledge to do his utmost best to survive in this dangerous world, he opts to hide his true strength in order not to throw the scenario into disarray. However, an unexpected turn of events led him to easily defeat a powerful demon that even the hero is hard-pressed to defeat. And to make matters worse, he did that in front of his favorite heroine in the game... Upon this incident, word started getting out about his true strength...!

Atobe Arihito is an intense workaholic thanks to his slave-driving boss, the beautiful Igarashi Kyouka. En route to an office vacation though, their bus gets into an accident, killing Arihito instantly.

His soul is transported to the fantasy world of “Labyrinth Country,” where he’s reincarnated as a “dungeon seeker”! Trying to join a guild and pick a job, he’s surprised to run into Kyouka, who also died and has chosen the job of “Valkyrie”! However, he rejects joining her party and decides to become the rare support role of “Rearguard”! But will he be able to find a party in time?

Presented with the strange Gift of Village Building, Luke, the son of a lord, is cast out of the domain in shame. He arrives in a barren land with plans to develop it as well as he can, and to live a simple, quiet life...when suddenly his mysterious Gift activates! Enjoy Luke’s amazing, slow life, and watch as his village grows, his Gift levels up, and his village-building capabilities transform in this new comedic series!

Shu, who died of old age, reincarnated as a baby in a different world where he was picked up by a poor orphanage. He quickly grows up under the watchful eye of the gentle director and staff. With skills received from God, he starts to exert talent…
He now lives at his own pace, adventuring with cute monsters and good friends ♪

One day, a mysterious tower suddenly appeared in the city. The people decided to call it a dungeon, and while it was full of rugged terrain and dangerous monsters, it was also a land of opportunity, where countless treasures awaited. When Sejun, a young man living an ordinary life, is invited to the dungeon by chance, he is thrilled at the prospect of becoming rich, but he is stranded in a hidden area of the mysterious tower. All he has is a few seeds and his body. Now Sejun must farm, collect resources, and figure out his own survival strategy!

In the era of astral pets, only the might of pets was essential! However, making the pets stronger has always been a slow and arduous process for pet warriors. That was until the appearance of a mysterious pet shop that changed everything!

The weakest skeleton could slay a great golden dragon with a single strike after training at this pet shop! Even the humble watchdog of the shop possessed ten legendary skills, and the female worker in the shop claimed to be a Goddess...

As for what the shopkeeper Su Ping thinks: I'm merely training these cute pets to become exceptional overlord beasts. What? Is it not normal?

The Demon King was defeated. The world is at peace. But… it was too late.

The Hero Albus is in a hurry. The story turns and begins again, as if naturally, from the place where it all started. The well-informed Hero Albus embarks on a new adventure, where time is of the essence.

Time-saving! Efficient adventure strategy! When recruiting a priest, be forceful! It doesn’t matter if you are mistaken for a new kind of scam. And suddenly, he challenges an S-class dangerous monster.

The Hero Albus seeks to reclaim the future he desires from the past in this ultra-fast readventure (real-time attack) fantasy!

An 18-year-old girl who lost her family in an accident, Yamano Mitsuwa falls off a cliff one day and transferred to a different world with a civilization level of medieval Europe. Mitsuwa who discovered it was possible to go and return to Earth after a deadly fight with wolves decided to live in both worlds.

「For security in old age, I will aim for 80,000 gold coins!」

I will try not to let strange things circulate to not distort the progress of the world, but I won’t hold back for the sake of my easy life and safety!
While wearing three handguns along with words and deeds that appear decent, in her head Yamano Mitsuwa is a sly girl. Making an effort to make money even with a small body that looks like a child to Westerners!

Oh, my secrets are too dangerous, is that so? It’s all right, it’s fine! I’ll teleport away when push comes to shove!

When there is no way out, the way is in.

Doomed to die next month, our terminally ill protagonist Chan is too frail and defeated to try anything at all.

No wonder he chooses to plunge himself into an RPG world he is only too familiar with.

Why should this run be any different?

Well, other than the fact that he will wake up inside the game and get struck with an existential epiphany that will make him fight tooth and nail to give Nox, his equally ill-fated RPG persona, a better chance?

Maybe, it’s not over until it’s over.

???: Alright, let’s keep it up and do the heave-ho
???: Heave
???: Ho
???: Heave
???: We can heave-ho all we want but I think we’re all screwed because of that guy.
The Coin market that goes beyond the dimensions, A newcomer has appeared and turned the Dimensional Trading Center upside down!
Erun Steelguard, the enemy of all traders.
He was actually living his second life, after losing all of this wealth to dimensional trading and dying a tragic death.

“I am not the pushover I once was!”

Kang Ji-hoon, an ordinary high school student who died in a painful accident, finds out in the underworld that he is actually a ‘Water Spirit King mistakenly born as a human’. “Making water spirits? How do you do that?” The adventures of Elqueeness, the Water Spirit King who was mistakenly born as a human!

One year after the war against King Glenn, a rebel army known as the Knights of the Fallen King has unleashed havoc throughout Szaalenden, seeking to revive Glenn! Is the war set to begin anew?

From LHtranslation :

In a certain world, there was someone who excelled in magic combat, people called him 『Sage』. Seeking the strongest combat art, he devoted himself to research every magic and combat arts in existence. And the conclusion he arrived at was very cruel, 『My body is not fit for magic combat』. Yet he didn’t give up. He sealed his own soul with a magic art, and was reborn in a far-off future. And the magic theory in the completely changed world he saw there was of unbelievably low level.

On his way home from his office, the main protagonist drove and ran over a big dog. At that moment, he heard the sudden sound of a voice inside his head. ≪ The monster has been subjugated, gaining experience points. ≫ 「Eh?」 Before anyone knew, the world has changed. Monsters appear, this is a game-like world where levels, skills, and status exist. This is an adventure where the modern world becomes fantasy and where the main protagonist has to strive hard for his survival.

"I'm terribly sorry!"

A god was suddenly prostrating in front of Kayano Takumi. He was apparently killed by mistake. Moreover, he can’t be reborn again. However, he is able to live in a different world? Then, let’s do that, please. The god made a mistake again and transferred me into a dangerous forest. Seriously, what’s going on? Besides, there are children here. I can’t leave them here, I will take care of them.

Because Rein was a weak and simple beast tamer, he was expelled from the hero's group but that didn't stop his desire to be an adventurer. By taking simple quests afterwards he has a destined encounter with a strong cat girl.

Lucas has a hard life. In his mid-thirties, a mixture of failures has left him old and crippled, playing pack mule to a couple of young adventures.

Then one day, he pulls a magic sword from a stone that tells him he has been chosen to become a hero. Given a youthful form, Lucas must use the power of the sword to vanquish evil and attain a massive harem.

Before you ask, it’s not isekai because he’s been in this world from day one. It is wish fulfillment, though, so in the end it’s basically the same thing.