Dark Hero 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

“Just now…is that…is it light?” Five heroes take on the mission to lead mankind to break through many difficulties and restart the light. In 2261 A.D., in order to punish human beings for destroying the solar system, the god-rank civilization blocked the sun with the moon, plunged the earth into endless darkness, and sent “rebels” to manage human beings and block technology. The earth has since entered the Dark Era. But the appearance of a boy is like a golden light slowly tearing through this endless “long night”.