The Battle Between the Good-For-Nothing Mercenary and the Demon King Who Escaped from Marriage

In a fantasy world where modern cities and demons intersect, there are hidden magicians, mercenary organizations and demon forces. The down-and-out mercenary Lin Xiaoyi unexpectedly summoned Arthas, the second prince of the demon world, and found that the man was actually the chatty demon king who was forced to get married and ran away. The two were forced to sign a symbiosis contract, and were involved in a dual pursuit by the demon clan's machinations and the human demon-hunting organization. During their frantic escape, the mystery of the protagonist's life story was gradually revealed.