Tower Of Karma 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

In a war-torn world, One boy swore revenge. War, love, friendship, comradery… he will use everything he can to rise up. This is the story of how a lone slave became a king.