Overpowered Sword 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 protagonist of a story is always decided from the start. No matter how hard the supporting role tries, they’ll just be a supporting role in the end. Then, a moment came where all of that changed. [Leon, do you think you’re qualified?] The holy sword that was supposed to choose the hero of the oracle came to him. What? You’re untalented, poor, and have no connections? Don’t worry! The hero who can resolve anything with the holy sword is here! “…There was a period when I thought like that too.” This is where Leon’s story as the hero begins.