Manga by author Shinkou Shotou

A young man unfortunately died in the modern era, he reincarnated in another world under the name "Eldo," which also happened to be a world similar to a VRMMO game that he used to play in his previous life. However, it's a world where he knows the "basic skills." Eldo became a level 1 adventurer, playing as a "novice," but he knows the world better than anyone, and this is because of the "data he knows." Will the reincarnation in this world make him strong?

"There's still more to do, that's why I need more time".With a strong determination, the old man picked up his Rejuvenation potion. The secret of this particular potion is that it rejuvenates the body while preserving the person's memory. Essentially the fountain of youth. The old man took it anyways and it took a while for the potion to tale effect.--500 years passedThe man, or young boy at this moment, awoke and found himself in the same world yet different. Nations disappeared, Regression of Civilization, decline in human skills and even basic alchemy has been lost!Lost Knowledge, Lost Technology! Nothing impossible in the mastery of alchemy!

A Level 1 adventurer, leveling up at an explosive rate with nonstandard skills and magic power? Kaede Suzumiya, a gamer, fell asleep while playing all night and when he woke up he found himself in another world, a fantasy world where using magic is possible! Using his knowledge of games, skills, and cheats acquired in this new world he decides to enjoy as much of his new life through magic and sword! This is an adventure tale from the Shinkou Shotou (Progressive Islands), the same company that brought you "Shikkaku Mon no Saikyou Kenja," "Tensei Kenja no Isekai Life," and "Isekai Kenja no Tensei Musou"!Portuguese / Portugus: Um aventureiro de nvel 1, subindo de nvel em uma taxa explosiva com habilidades fora do padro e poder mgico? Kaede Suzumiya, um gamer, adormeceu enquanto jogava a noite toda e, ao acordar encontrou-se em um outro mundo, um mundo de fantasia onde usar mgica possvel! Usando seu conhecimento de jogos, skills e cheats adquiridos nesse novo mundo ele decide desfrutar o mximo de sua nova vida por meio de magia espada! Este um conto de aventura da Shinkou Shotou (Progressive Islands), a mesma empresa que trouxe para voc "Shikkaku Mon no Saikyou Kenja", "Tensei Kenja no Isekai Life" e "Isekai Kenja no Tensei Musou"!

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.

Sano Yuji, a black company employee, is summoned to another world while finishing his work at home. His profession in the other world, a Monster Tamer, is considered a job that makes it difficult to become an adventurer. However, thanks to some slimes he met, which read several magical books, he gained magical powers and the second profession, Sage.Yuji acquired overwhelming power, but is he conscious of his strength? Blindly becoming unparalleled and strongest in the world!

Senmetsumadou no Saikyou Kenja: Musai no Kenja, Madou wo Kiwame Saikyou e Itaru

.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...(Source: Novel Updates)