Dead or Deadline 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

A man named Chen Ji was obsessed with a manhua called "Assassin A" when he was a child, causing him wanting to become a manhua artist. After years of hard work, he finally succeeded in becoming an assassin. Today's assassination target is a special person...