It all starts with playing game seriously

It all starts with playing game seriously manga summary:

One born as an ant out to have will and ambition. Fate has not yet been determined; each of us are a black horse. When the game [Yuan World] descended into reality, players gained the ability of their in-game characters. As such, the world became chaos. Liu Yi — forbearing, ambitious, yet afraid of fighting— time travels to an era before the game had become reality. Armed with the knowledge of the future, starting from the bottom to overcome his fear of fighting, Liu Yi rises up to the top, ultimately becoming the Savior and resolving the crisis of the apocalypse.