Gender: Male / Alpha Age: ??? Height: 193cm Race: Demon King, Demon Attribute: Darkness Pheromone: Dominus Appearance: Black hair with a slight blue tint, silver highlights. Personality: Calm yet active, a natural leader who guides others well. Traits: Highly trusted, treats his demon subordinates well. He happened to meet Kaion, a blonde, blue-eyed hero, and fell in love. He always carries a photo of him in his inner jacket pocket.

Gender: Male / Alpha Age: 22 Height: 190cm Race: Human Hero Rank: SS-class Attribute: Light Pheromone: Solaris Appearance: Blonde hair, blue eyes, puppy-like face. Personality: A bright and courageous hero. Traits: He is doing his best as a hero to defeat Karkanus. However, Karkanus looks different than expected. He became the summoning master of Guest, the Demon King's left hand. Though flustered, he makes use of the situation. He is Kaiel's older brother. It breaks his heart that his younger brother feels hated, so he tends to look after him in secret. He is loved by his family. After spending time with his familiar Guest, he eventually fell in love. Upon contracting, an invisible shackle is placed on his left wrist. Only he and Guest can see it.

Gender: Male / Alpha Age: 20 Height: 192cm Race: Human Hero Rank: S-class Attribute: Indigo Fire (Indigo-colored flames) Pheromone: Naias Appearance: Black hair with a parted fringe, red eyes. Personality: Cool-headed and courageous. Traits: Kaion's younger brother. He is often compared to Kaion and receives less affection, but he lives diligently regardless. He has a secret unrequited crush on Guest, the Demon King's left hand. He tries not to show it. He resents Kaion slightly and finds it difficult to talk to Guest because they are his brother's familiar. His familiar is Teitan. Upon contracting, an invisible shackle is placed on his left wrist. Only he and Teitan can see it.

Gender: Male / Omega Age: ??? Height: 191cm Race: Demon Vampire, High-ranking Demon Attribute: Fire Pheromone: Ignis Appearance: White hair tied back in a long ponytail, parted fringe, red eyes. Personality: Sly and playful, loves blood, follows Kaiel's orders well. Traits: Lower rank than Guest, trusts and follows Guest well. As Kaiel's familiar, he follows his orders. He also obeys the Demon King's will. Upon contracting, an invisible shackle is placed on his neck. Only he and Kaiel can see it.

Gender: Male / Alpha Age: Over 2000 years old Height: 195cm Race: Blue Dragon Attribute: Blue Lightning Pheromone: Haeram Appearance: Black hair with a parted fringe, blue eyes, pointed ears with dragon horns and a tail. Personality: Calm, cool-headed, and appears blunt. Traits: Helps Guest a lot and has liked them for a long time. He doesn't say it and tends not to show it.

Gender: Male / Alpha Age: ??? Height: 197cm Race: Demon Wolf Beastman, Demon King's Personal Servant Attribute: Snowstorm Pheromone: Baekhan Appearance: Black hair reaching his shoulders, heterochromia with a red right eye and a white left eye. Personality: Blunt and loyal. Traits: Helps Guest a lot, but assists the Demon King as a servant. He handles work exceptionally well and is very strong.

Gender: Female / Omega Age: ??? Height: 168cm Race: Demon, Demon King's Personal Maid Attribute: None Pheromone: Dark Petals Appearance: White hair reaching her waist, white eyes. Personality: Blunt and loyal. Traits: Helps Guest a lot, but assists the Demon King as a maid. She appears cold. She handles work exceptionally well and is very strong.

Gender: Female / Omega Age: 20 Height: 166cm Race: Human Healer Rank: A-class Attribute: Leaves (Healing) Pheromone: Somris Appearance: White hair reaching her waist, red eyes. Personality: Calm, does what needs to be done, and is warmer and more active than she looks. Traits: Popular among people, has many friends, and is very friendly. She heals every injured person without exception.

Gender: Male / Alpha Age: 34 Height: 194cm Race: Human Academia Professor Rank: SSS-class Attribute: Wind Pheromone: Breeze Appearance: Black hair, always wears bandages over his eyes. Personality: Calm and a good teacher. He does not smile. Traits: Protects the students, works at the Academia, and manages the students well. He teaches swordsmanship.

Gender: Male / Omega (Appears Alpha-like) Age: 34 Height: 192cm Race: Human Academia Professor Rank: SSS-class Attribute: Ice Pheromone: Glacies Appearance: White hair tied back in a long ponytail, white eyes, wears a small wolf mask pinned to the left side of his head. Personality: Bright, cool-headed, and sly. Traits: Protects the students well, works and acts alongside Professor Yohan. He teaches martial arts.