The Legend Of The demon God 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

Thousands of years ago, the immortal clan and demon clan were battling for the universe. To defend the peace and justice, the immortal clan created a mysterious legendary fighter, who blew himself up into thousands of pieces, floating in the world. And Lu Xiaofei inherit a piece of the fighter.