Demonic Evolution 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

On the brink of death, the strongest warrior of humanity, Ang, mysteriously reincarnates sixty years into the future with the strength of the “Strongest Demon” — a dangerous double-edged sword. In order to resolve his regrets and unveil the truth, Ang has no choice but to continuously “evolve” in a bid to escape his past fate. “I won’t let myself be a bottled-up demon! If I want to get out, I must rely on myself!”