Adventure isekai ⚔ (NO Harems)

The main character reads web-novels as a hobby and when a particular story is about to reach its conclusion, he gets a message from the author thanking him for reading. And then the world around him suddenly morphs and hes thrust into the novel. Too bad its about the apocalypse.
(This one is SO good, I hope it gets animated someday)

Birth of a Hero is an ordinary novel where the kind protagonist, Choi Han, loses everyone he loves and falls deep into desperation. In order to get revenge, he leaves his home and heads to a nearby city where he beats up a low-life, drunken noble who was getting on his nerves, a barely relevant moment for this soon-to-be hero's journey.
Unfortunately for Kim Roksu, he wakes up as Cale Henituse—the same drunkard noble who is destined to be beaten by Choi Han.

Sejun, your average Seoul underdog, didn't expect to grow tomatoes full-time when he stumbled into the mysterious dungeon full of monster quests and extravagant rewards. Yet, there he was, as a farmer growing and selling cash crops while clearing numerous quests that came his way. Will Sejun make it out of the dungeon with the plush rewards he hoped for? At least he has what it takes: optimism, resourcefulness, and a group of loyal furry friends.

Seo Gio was just a normal art teacher in the school, but because of the fire accident in the school, he saved his students and sacrificed himself in the fire.

Somehow after his death, he was summoned into the other world... No, should we say he became the "portrait" ghost?

I’m a roleplayer. A gamer who creates characters according to their classes and happily acts as them.“Don’t… Touch me……”“Talk more and see if you can handle my wrath……”My current character was a Demon Knight who kept a Demon sealed in his right arm! One day while I was just acting as my character and enjoying the game as usual……“Log out.”[This command cannot be carried out.]“……?

"THE NEW GATE", an online game that had turned into a death game, was now releasing the tens of thousands of players that had been dragged into it, thanks to the efforts of Shin, one of the oldest players. But after he had defeated the last boss and freed everyone, he was swallowed up by a strange light and found himself inside the game world 500 years in the future.

A pop-up event for some ‘modern fantasy’ media I loved so much that I even took a precious day off work to attend. On that day, I ended up transmigrating as a character in that very fantasy world. As none other than a newly hired employee at a famous large corporation! A dream job with great benefits, an excellent salary, and even kind and competent bosses. I’m using the information I know about the world to rise through the ranks at lightning speed!

The character with the highest difficulty and the worst performance, Baek Yuseol, was considered a trash character in-game because he could not use magic in a fantasy setting where everyone else could. However...

[Because the wrong ending has been reached, 90% of Aether World has been destroyed.] [Please reach the "True Ending."]

Suddenly, those words echoed in my mind before I was transmigrated to the Aether World.

Gray, a B-rank adventurer, was supposed to be just a mob character in the RPG "Bright Fantasy". However, by chance, he saved an orphan who was attacked by thugs on the roadside and decided to raise him as his father. But the orphan turned out to be the hero of this world, "Iska". This choice would greatly change the fate of the world.

After being summoned to another world as the 68th hero, Setsuna Sugimoto is abandoned by that same world due to his sickly constitution. But when he meets Kyle, a millennia-old former hero like him, Setsuna is given a third chance at life—inheriting Kyle's knowledge, power, and even life force. Now able to travel the world as an adventurer, Setsuna will encounter people from all walks of life, with each meeting bound to leave a lasting mark on himself and the world.