Isekai

Raul who had defeated the demon king as the strongest hero should have become the savior of the world. Having his treasured companions and family killed by power hungry aristocrats, he was executed with false charges brought against him by the princess. Just before his life collapsed, at last his heart fell into darkness. ...I will tear those traitors from limb to limb. Burn them at the stake. Sever them to pieces. Skewer them. I will kill every one of those bastards without mercy and make them taste hell's suffering.....!!! Obtaining the power of darkness, Raul was revived. Sneering, he vowed revenge. “Oh, I’m looking forward to it – from now I'll bask in their blood as I please.” Several days after the hero's revival in the imperial capital where flowers bloomed in profusion, the parade that would advance towards tragedy began.

Poisoned to death by her own betrothed?! Eunha didn’t wake up in a novel’s story just to get killed off again as an unfortunate extra! To change her story she needs a cover… 6 months pretending to be the fake fiancée of the novel’s male protagonist, Duke Noah Wynknight. But will this cold-hearted, angel-faced demon of a man really help her avoid another ill-fated ending?!Source to collect

Raising a hundred heroes and ending the war with an evil god, Eisen is the prophet that saved the world. Having received a great injury from protecting the heroes, he left for the Other World to recover. In that time, the heroes made use of their abilities to contribute greatly to the development of the world. Longing to meet again with the master they admired, they reported to him of their achievements in detail. Reading their letters, Eisen makes a decision to set out and pay each of them a visit as he travels the country to sightsee.

Kanami, a young man that strayed into another world and suddenly awoke in a dark corridor is nearly killed by a demon and humans. Then preferring to use the status and skill systems Kanami aims for the deepest part of the Labyrinth. The skill [? ? ?] consumes his emotions, and he befriends some unusual people, but while his spirit wanes in the other world’s Labyrinth he refuses to give up on returning to his original world. "I'll absolutely save you. Hence I will–!!" Aikawa Kanami awakes in a corridor he has no recollection of, the wound he received from a goblin is cured by a pretty girl called Lastiara, and he learns that he's in a different world that's exceedingly similar to a game. Kanami makes into his weapon the hearty welcomed status and skills, and with a pretty girl Dia plunges forward towards the deepest part of the labyrinth that's rumoured to "grant any wish"–. This is a story of a boy who exposes the deepest part (truth) of the labyrinth and fulfills a wish.

The strongest berserker in Pandemic Wold Online (game) is summoned into the world of the game, but in his second acount as a mage at level 1, watch his adventure into the unknow in this fantasy world

“You good-for-nothing bastard. You are the son of a Sword Saint, yet you dare pull such a defective Class!?” During the〈Divine Blessing Ceremony〉of the 15-year-old Elma who came from a lineage of Sword Saints, he had manifested a commonly deemed defective class known as the Heavy Knight. He had been deprived of his position as the next head of the Edvan Household and was then exiled. The Heavy Knight class had an unbalanced status and useless skills, to top it off, it was even said to be a class cowardly and indolent people have. But, Elma knew better—that this world was the world of the game he had used to play before—and that the Heavy Knight class was the strongest class to exist. Elma made full use of the knowledge he had in his previous life and began his efficient walkthrough of the world he was reincarnated into.

Waking up, Kim Hajin finds himself in a familiar world but an unfamiliar body. A world he created himself and a story he wrote, yet never finished. He had become his novel’s extra, a filler character with no importance to the story. The only clue to escaping is to stay close to the main storyline. However, he soon finds out the world isn’t exactly identical to his creation.

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One day, your average joe university student, Kashiwagi Yuuya was summoned to another world by a stupid goddess. His mission is to do what any cliche Isekai MC does; become the hero, get the harem, defeat the demon lords, save the kingdom/other earth and go back to earth. After doing all those menial shit, he was granted to go back to his original world with only a second passed despite wasting 3 years in his "hero" life. Expecting himself to be an average joe again, much to his surprise, he still retains his powers as a hero. It seems his mission is just not over yet. It's an isekai but not an isekai but technically an isekai? Just read it to find out! From the popular web novel is now in manga form! WN Raw:

Tenjou Yuuya has been a bullied boy since the past. He lives in the home of his beloved grandfather while he goes to school. As usual, he receives a harsh bullying, and he takes an extended absence from school to have some time to heal his wounds. While on this long time of absence, he takes the opportunity to clean his grandfather's house and goes to a room he never went before, where his grandfather keep many different objects that he gathered from his travels around the world. While he was arranging the objects, he found a door not on a wall among the objects. Out of curiosity he opens this door, what he found on the other side was...

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An angel made a mistake, resulting in Shiihara Daiki’s death. In order to hide the mistake, he was then sent to a different world. The angel will grant him one wish as a payment for keeping it a secret. Daiki asked for a Heavenly Castle floating in the sky without hesitation. Suddenly a floating castle appeared in the new world, which causes confusion amongst the people. They attempt to contact Daiki in various ways. A country tries to steal it by force, while another seeks to befriend him. What in the world will Daiki do?