The Last Adventurer is a Manga/Manhwa/Manhua in english language, Action series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

The gate opened and the era of adventure began. It was a time when everything fell apart, bringing forth the period of dread, desperation, and misery. It became an era when everyone gave up trying to fight back. However, there was one adventurer who pushed on till the end. “You are the only one left, El Paume. You are the last adventurer.” The moment the era of adventure came to an end, the last adventurer brought the whole story back to its starting point.