Quan Zhi Jian Xiu

When the game world and the real world began to merge, Lin Jichen — the highest leveled mage player in the game "Eight Worlds" — died from the betrayal of his girlfriend and brother. But he was reborn back to the day before the Eight Worlds was released. Given a second life, he decided to forsake magic and take up the sword, and he will cut his way to a new future and change his fate! He will use his game knowledge build himself up to unbeatable heights before the game world becomes reality!

(Source: Kuaikan, translated)