Return to the Zombie Crisis is a Manga/Manhwa/Manhua in english language, SCI-FI 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

Zombies return, where will humans go? Vic, the survivor of the laboratory, is hunted down again, and the secrets buried in the new world are constantly being revealed. Who is the justice in the hands of?