The demon Azazel is summoned by Rinko Sakuma as a practice for demon summoning by her employer, Demon Detective Akutabe. Refusing to go back without having a task given to him, Rinko allows Azazel to wash the windows. She later tries to summon Beelzebub, but summons Moloch instead. Moloch is at first shocked by his shrunken state, but Azazel explains that there is an Anti-Demon barrier that reduces their power dramatically and turns them into small, cute, weakened animals. When Moloch demands a tribute for being summoned, Rinko presents him with curry. Insulted by the tribute, he begins to punish Rinko by turning her into a cow. Luckily, Akutabe arrives and makes Moloch accept the tribute by having him eat it, turning Rinko back to normal. When he is shocked to find it is beef curry, he returns to Hell crying with Azazel trying to comfort him. Akutabe then scolds Rinko for her carelessness and warns her to be more careful when dealing with demons.

Azazel is worries Rinko will become another Akutabe after he discovers she has been getting increasingly good at using magic. Later, a client asks Rinko to help her break up with her idiotic host club boyfriend, Seiya. At the club, Seiya stated when he becomes number one host, he will agree to break up with his girlfriend. Not seeing it happening, Rinko uses Azazel's ability to make him irresistible to women and become number one host. Azazel soon realizes because of the guy's stupidity, he could use him to leave the agency. The next day, Azazel tricks Seiya to steal his grimoire from the agency. With Akutabe gone on a three day case on the other side of the world, Rinko is forced to rely on Beelzebub for help. He explains that since the grimoire was stolen, she has two days to get it back or she will be cursed by the grimoire and her ties with demons will be severed. He at first is unwilling to help until Rinko points out that if their contract is terminated, he'll have to go back to working with Akutabe who treats him far worst. They find Seiya and Azazel at a club seducing women and gaining power thanks to Azazel's ability of inciting lust. Rinko tries to convince Seiya to giver her back her grimoire, even showing him Okada who was turned into an iguana for abusing the power of the grimoire. Unfortunately, Seiya is too incompetent to understand the severity of his situation. They try to use force but are captured. As Azazel and Seiya celebrate their success, the later goes to defecate, but does not have toilet paper, so he uses a page of the grimoire. For desecrating the grimoire, he is turned into a praying mantis leaving Azazel unable to use his powers. Rinko soon gets free and once again has Azazel's grimoire back. She then punishes Azazel with a curse that causes him to explode, much to the horror of Beelzebub who realizes she is slowly becoming like Akutabe.

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