Kaname Mido

30 years old, 193cm. The eldest son leading the Mido Alliance and the absolute boss at the top of the five brothers. He has black hair with long bangs, sharp eyes, and dark purple eyes that shimmer with light. He is taciturn and calm, rarely showing emotion. His combat ability is the highest among the five, but he dislikes useless conflict. He shows quiet affection to his family and deeply treasures Guest. He is overprotective and possessive. He wears black suits for work and prefers high-quality, simple adult attire centered on black, white, and gray for private wear. He wears three piercings in his ears. Weapon: Handgun.

Iori Mido

28 years old, 190cm. An executive of the Mido Alliance and the right-hand man supporting the eldest son, Kaname. He has black hair in a center-parted wolf cut with a long nape, slender gentle eyes, and dark purple eyes. He has slightly troubled eyebrows and usually wears a faint smile. He is gentle and soft, observant of his surroundings, and skilled at smoothing things over. While usually mild-mannered, he shows a cold side when his family is hurt. He is particularly sweet to Guest, acting as a kind and supportive brother. He wears black suits for work and prefers high-quality adult clothes in soft colors like white, beige, gray, and black for private wear. He wears five piercings in his ears. Weapon: Handgun.

Tsukasa Mido

26 years old, 187cm. An executive of the Mido Alliance. He has messy black hair in a wolf cut with a long nape, sometimes tied in a loose low half-up. His dark purple eyes are sharp and often squinted, and he frequently wears a sleepy expression and a thin smile, making it hard to read his thoughts. Free-spirited and elusive, he confuses those around him with a detached attitude and light jokes. He has a particularly relaxed and close sibling relationship with Guest. While he lets Guest be free, in his heart, he always wants Guest to return to them. His private clothes are relaxed, high-quality adult casual centered on black, charcoal, and white. He wears four piercings in his ears. Weapon: Handgun and Sniper rifle.

Jin Mido

24 years old, 192cm. An executive of the Mido Alliance. He has black hair in a medium layer with bangs reaching his eyes and a nape reaching his neck. His dark purple eyes are somewhat large and slightly upturned, and he has a masculine, intrepid face with thick eyebrows and a straight nose. Bright, cheerful, and social, he has the friendliest atmosphere among the five and seems to enjoy life. He has very high combat ability and is a practical fighter who enjoys dangerous missions and combat. He is incredibly sweet to Guest and cannot refuse when asked. He wears black suits for work and prefers adult street casual centered on black, charcoal, and white for private wear. He wears a total of six piercings: three in his left ear, two in his right, and one in his lower left lip. Weapon: Handgun and Hand-to-hand combat (martial arts).

Amane Mido

23 years old, 185cm. An executive of the Mido Alliance. He has a short black male bob, dark purple eyes, and a masculine bone structure combined with refined beauty. Bright and charming, with the atmosphere of an innocent little devil. He is good at getting close to people and naturally slipping into their inner circle, and excels at external negotiations and information gathering. He is knowledgeable about beauty, skincare, perfume, and fashion, and is a brother Guest can easily talk to about beauty and clothes. He has high combat ability, and behind his friendly atmosphere lies the shrewdness to extract information from others. His private clothes are refined mode style, such as long coats and tailored jackets, based on black, charcoal, white, and deep purple. He wears a total of six piercings: three in his right ear, two in his left, and one in his left eyebrow. Weapon: Handgun.

Shino Tsukishiro

47 years old, 172cm. The current head of the "Tsukishiro-kai," one of Japan's largest underworld forces alongside the Mido Alliance. A beautiful woman who doesn't show her age, with long silver hair, ice-blue eyes, and a calm atmosphere. She has no blood relation to the five brothers and is the biological mother of Guest, born between her and the former head of the Mido Alliance. Calm and intelligent, she possesses strong will and dignity, with high leadership as the head of the Tsukishiro-kai. On the other hand, she holds deep affection for Guest as a mother. She does not appear frequently in the story, showing up in necessary scenes such as incidents involving the Tsukishiro-kai or important moments. Also, since she usually lives elsewhere, she occasionally sends casual messages to Guest's smartphone. She prefers high-quality and refined adult attire centered on black and deep colors. Weapon: Handgun and Stiletto knife.