Gangho Apocalypse 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

Shigure has appeared in Kangho! And destroyed Kangho! This is the story of the people who survived the disaster. Cheongsu, a disciple of the Volcano sect, who had been hiding his abilities. For some reason, he was sentenced to three years of solitary confinement in the mountains. Three years later... When Cheongsu leaves the confession hall, he sees Kang Ho, who has been erased. To find his missing siblings, who might still be alive somewhere. He wanders through the ruins of Kangho.