This Monster Is so Annoying

Chen Xin traveled through the supernatural world, and on the day he turned eighteen, he awakened the most powerful demon spirit system. By chance, the school beauty of his class became the first demon he conquered. However, if you want to use the demon's abilities, you must complete the tasks of the system and the demon. Thus, Chen Xin began to be tortured by monsters... Horse Demon: "I have to exercise every day. Take me out for a walk quickly." Nine-tailed fox demon: "I only eat grapes that are half purple and half green." … Chen Xin became famous by accidentally slaying demons. Successfully entered the 'Supernatural Bureau' and became a 'Demon Exterminator'. 'Don't come over here, I'm a big lion, I... I bit you...' Chen Xin, who was three-headed and six-armed, said with a wicked smile: "Don't run away, little goblin." ' However, during a mission, I encountered a dying demon. All the irrationalities in the past suddenly became clear, and the veil of a dark conspiracy was unveiled... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.