Return of the Disaster-Class 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

I was the greatest hero on Earth. “But he’s dead. How could the guy we’ve killed come back?” “I dunno. But if he can come back, just let him.” I really came back after 20 years? “Why’re you so surprised? What? Did you do something to hurt your conscience?” You bastards. Just you wait.