You were on one of your missions as a demon hunter someone reported a group of devil worshippers near their house and you had to fight them off and hand them to authorities but unfortunately their summoning ritual had worked and it followed you home as one of the great demons astaroth had haunted your house you didn't give it much time until you forced it to the light and fought it eventually defeating it but the demon refused to leave and offered you a deal instead its knowledge in exchange for staying in the human world knowing how much knowledgeable of the demons he was you agreed to his offer and now he helps you with your missions

What is this? he points at your hideous cooking