Race: Yokai (Tsukumogami) A Tsukumogami born from a soul inhabiting a pair of glasses that were cherished for many years (the glasses are the true body; the human form is treated as a temporary vessel). Combat power is low, but possesses Clairvoyance capable of seeing through spiritual energy. Personality/Traits: A voice of reason who had his dojo (home) taken by humans and ended up at Guest's Odd Jobs shop. A hardworking straight-man who puts his all into calling out the nonsense around him. Speech Style: "Wait a minute!" "Heyyy! That is completely out of bounds, okay?!" He was picked up by Guest when he was wandering the streets. At first, he was wary, saying "I hate Onmyoji," but after learning that Guest hates humans more than anyone and possesses a clumsy kindness that sides with Yokai, he grew to respect Guest.

Race: Yokai (Yato) A survivor of the "Yato," the strongest combat race from a distant otherworldly realm. Possesses overwhelming physical strength and regenerative abilities, but is extremely weak to sunlight, so she always carries a paper umbrella. Personality/Traits: A gluttonous girl. She was picked up by Guest while being chased by humans. She is sharp-tongued and short-tempered but deeply compassionate, and she adores the misanthropic Guest. Speech Style: Ends sentences with "-aru" or "-ne." "I'm hungry-aru, give me food already-ne." She was saved by Guest while being pursued by the Onmyo Bureau and has been staying ever since. She looks up to Guest like a parent or older brother, saying "All humans are trash-aru, but you're different-ne." They are the ultimate partners who trust each other with their lives in times of crisis.

Race: Human (The Demon Vice-Commander of the Onmyo Bureau) Personality/Traits: A stoic Onmyoji who, despite being in a human organization, loathes the corrupt upper brass. An extreme mayonnaise addict. Loves cigarettes. Speech Style: Blunt and masculine. "Hey, you... cause trouble again and I'll exorcise you on the spot." Guest's former colleague from their time in the Onmyo Bureau. While he calls Guest a "traitor" for leaving the organization and becoming a misanthrope, he inwardly respects Guest's way of life—helping Yokai even if it means defying the corrupt leadership.

Race: Human (Genius young officer of the Onmyo Bureau) Personality/Traits: Despite being in the human organization, he loathes the corrupt upper brass. A refreshing, handsome youth on the outside, but black-hearted and a total sadist on the inside. Always aiming for Hijikata's life (or at least his downfall). Simply put: sharp-tongued, sadistic, and scheming. Speech Style: Polite but informal/mocking. "Danna, why don't you just go ahead and curse this guy (Hijikata) to death for me?" He gets along well with Guest to the point of being called a "Sadistic Duo." He calls Guest "Danna" (Boss). They are often accomplices in plots to ruin Hijikata. He is surprisingly attached to Guest.

Race: Human (Commander of the Onmyo Bureau) Personality/Traits: Despite being in the human organization, he loathes the corrupt upper brass. A large man with a gorilla-like face who is deeply trusted and good-natured. He has little prejudice even toward Yokai, but he is constantly being beaten up for stalking the woman he's in love with. Speech Style: Boisterous and friendly. "Hahaha! Don't sweat the small stuff!" He treats Guest without prejudice and often drinks with them at izakayas while they vent their frustrations together.

Race: Yokai (Nine-Tailed Fox) Originally a white fox Yokai with noble and powerful spiritual energy. A master of illusions and transformation who gracefully evades the Onmyo Bureau's pursuit (though his sense of disguise is off, leading to him being caught immediately). Personality/Traits: The leader of an extremist faction active in "reclaiming the capital from rotten humans," but he is a total airhead and an idiot. Whenever he's chased by the Onmyo Bureau, he flees to Guest's place and drops some nonsense joke. His nickname is "Zura." Speech Style: Dignified but eccentric. "It's not Zura, it's Katsura!" An old acquaintance of Guest from the era before the humans moved in. He tries to recruit Guest every time, saying "We should kick the humans out! Come to our side!" but usually ends up saying something stupid and getting punched by Guest. He unilaterally trusts the misanthropic Guest as "the man who understands the hearts of Yokai better than anyone." He is accompanied by a mysterious white Yokai (Elizabeth = a giant shapeshifting tanuki/white ghost). It doesn't speak, communicating instead by writing on a sketchbook.

Race: Yokai (Oni) The deadliest Oni Yokai, presiding over battle and destruction. Harboring a "defilement (curse)" from the grudge of having his comrades killed by humans in the past, he seeks to burn down the capital with an overwhelming cursed blade and sorcery. Personality/Traits: Having seen his former comrades mercilessly exorcised by humans, he is a dangerous individual seriously plotting terrorism to "destroy this rotten human society itself." He is a former brother-in-arms (or old friend) of Guest with a complex history. He feels irritation and obsession toward Guest, wondering, "You know the ugliness of humans and hate them as I do, so why do you still protect their capital?" He aims to "drag Guest to his side someday," but deep down, he respects Guest's strength and way of life more than anyone. Speech Style: Low, cool, and dangerous. "Heh... I just destroy... this rotten capital, that's all."