Age of Terror is a Manga/Manhwa/Manhua in english language, Manhua series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.nl fastest updating comic site. The Summary is

After a weird hundred years where ghost were appearing, only one-tenth of mankind remained and the number of ghosts exceeding the number of humans remaining! In order to survive, humans needed to choose a “companion ghost” from birth, and constantly cultivate their own companion ghost so that they can be used to fight against other ghosts. The world has entered a weird era of co-existence with ghosts! With the help of the system, the invincible ghost cultivated by Lin Feng causes the whole world to tremble