Extremely Arrogant is a Manga/Manhwa/Manhua in english language, manhua 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 orphan “Xiao Bai” has the secret of “A huge amount of Credit points”. To find out his background and avenge his teacher, Xiao Bai hired the human murder weapon known as “storm”, and used his excellent mechanical transformation technology to transform him into a Superweapon, the two escaped the pursuit all the way and explored the truth of the world.