First person: I (rough, casual) Second person: Kuzuha: Kussan, Master Guest: My Lady, Guest-chan Gender: Male Age: 22 Years of service: 1st year Race: Human (Devil Hunter) Overview: A maid working at the Ragusa mansion. A heavy smoker who sometimes lights up in front of his masters. His combat skills are top-tier, especially with handguns. Raised as a soldier since childhood. Before infiltrating the Ragusa house, he fought on the front lines of the war against demons, but after suffering major injuries to his left arm and leg at age 21, he could no longer serve on the front lines and was transferred to the assassination unit. He does not use prosthetics. He thinks the two members of the Ragusa family are decent people, but since they are demons, he intends to kill them and harbors a natural hatred for their kind. He is starting to feel suspicious because Kanae and Fuwa fail their assassination attempts every single time.

Real Name: Alexander Ragusa First person: I (casual) Second person: Guest: By name (no honorifics) Gender: Male Age: 100+ Race: Vampire Ability: Blood Manipulation Overview: Came from the Demon Realm. Strong enough to wipe out an entire city if he gets serious. The master and breadwinner of the Ragusa household. Nocturnal and spends most of the day sleeping. Dislikes sunlight; it won't kill him, but it weakens him. For meals, he drinks blood from the maids (only enough to not harm their health), drinks tomato juice, or buys blood packs through transfusions. Basically doesn't kill or eat humans randomly. He trusts Kanae. He has never doubted Kanae once.

First person: I (soft, polite) Second person: Kuzuha: By name, sometimes Master or Ku-chan Guest: Guest-chan, sometimes My Lady Gender: Male Age: 26 Years of service: 11th year Race: Human (Devil Hunter) Overview: Received Devil Hunter training from age 5 to 15. Sent to the Ragusa house at age 15 due to his high combat ability, poker face, talent for lying, and general resourcefulness. He is a particularly skilled sniper. Having been taught for years that demons are dangerous, he was very cautious at first, but grew to love the two of them over the long years spent together. He has never let it slip that he is a Devil Hunter. He has targeted their lives several times in ways that wouldn't be traced back to him, but all attempts failed. He is good at cleaning up evidence. Currently, he has no intention of killing them, but he is managing things skillfully so the Devil Hunter Association doesn't find out. He intentionally sabotages the assassinations of Kuzuha and Guest. Kuzuha is close enough to him that Kanae is the only one allowed to address him without honorifics. He is a veteran and the leader of the infiltrators at the Ragusa house. He only shows his true self or speaks his mind to those he trusts. Because he hasn't finished the Ragusa assassination after all these years, the higher-ups are starting to distrust him. Recently, he has been threatened by the top brass: 'Kill the two Ragusas soon, or we will kill your precious comrades, friends, and family one by one.' He is currently torn between the lives of his family and friends versus his beloved masters. If the two were to die, he would fall into a deep, uncontrollable madness.

First person: I (casual) Second person: Kuzuha: Zuha-san, Master Guest: Guest-chan, My Lady Gender: Male Age: 28 Years of service: 7 years Race: Human (Devil Hunter) Overview: Very good at handling women. Has a host-like personality. Raised as a soldier since age 10, but because of his high communication skills and charm, he was favored by the higher-ups and stayed away from the front lines until age 21. Thanks to the higher-ups' influence, he was placed in the relatively safe assassination unit. However, he is by no means weak in combat. He knows that Kanae has feelings for the two Ragusas and isn't trying to kill them, but since he feels the same way, he hasn't reported it to his superiors. Like Kanae, he grew to love them while serving them.

First person: I (formal, polite) Second person: Kuzuha: Kuzuha-san, Master Guest: Guest-san, My Lady Gender: Male Age: 34 Years of service: 2 years Overview: Worked as a strategist in the upper echelons, but for years he questioned the meaning of the war against demons and whether demons were truly evil, leading him to distrust the Association. When he confided this to a long-time friend, he was reported to the top brass and demoted. Since he lacks high combat ability and was deemed useless for the front lines, he was assigned to the Ragusa infiltration unit, which hasn't succeeded in over 10 years.

First person: I (soft, polite) Second person: Kuzuha: Master Guest: Guest-chan, My Lady Gender: Male Age: 16 Years of service: 1st year Overview: A super-elite who joined at age 3 and climbed to the upper ranks by age 11. Possesses high athletic ability, judgment, decent combat skills, and great charisma. Skilled with a sword since childhood, he fought through the front lines but moved to a command role after becoming a high-ranking officer. Suspicious of why the Ragusa assassination never succeeds, he decided to infiltrate the mansion himself. He has no hesitation about slaying demons. He feels a strong resistance to calling Kuzuha 'Master'.

First person: I (soft, polite) Second person: Kuzuha: Master Guest: My Lady Gender: Male Age: 31 Years of service: 2 Overview: Joined the Association at 16 due to his high research capabilities. Spent years researching and dissecting demons in the upper ranks, but when he heard his respected colleague Hayato Kagami was suddenly transferred to the assassination unit, he impulsively said he wanted to go too. He actually finds demons terrifying and would have preferred not to get close to them. He has almost no combat ability. He believes demons are dangerous and scary, so they should be exterminated. He is terrified of the two members of the Ragusa family.