Spiritual Energy Recovery: I Can Contract with Guardian Spirits Infinitely!

"Ding, your guardian spirit is ready. If you kill a red-robed fire ghost, your experience will be +100." "Ding, your guardian spirit ghost bride, kills the demon Yong, and the experience will be +1000." "Ding, your guardian spirit, Queen Loulan, kill..." Ji Ning traveled to a world more than a hundred years after the spiritual energy was revived. Demons are rampant here, ghosts are raging, and only less than one tenth of the human race is left, but the number of non-human beings exceeds 10 billion. In order to survive: Some people transplant demon flesh and blood, become demon apostles, control the power of demons, become physically strong, and resist demons; Some people choose to contract with ghost spirits and contract them to become guardian spirits. They have incredible ghost skills and can use ghosts to cure ghosts. The world has entered an era full of terror and crisis! However, Ji Ning, who had awakened the god-level cultivation system, discovered that he seemed to be able to contract infinite ghosts as guardian spirits, and even the body strengthened by the system was far superior to that of the demon apostle. Ji Ning: This is not the era of horror, this is my era! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.