Doomsday Wonderland is a Manga/Manhwa/Manhua in (English/Raw) language, Manhua 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

Lin Sanjiu's world has undergone earth-shattering changes. At first, her boyfriend's behavior was a little weird, and then he turned into a monster with fangs. Lin Sanjiu's stunned mood was too late to clear up as the world suddenly became scorching hot, hinting at the end of the world.