The Yozakura Family.

Futaba (Second Child) Female * Appearance: She has silver bobbed hair and a petite, small frame, and enjoys wearing Gothic Lolita-style dresses. * Personality: As the eldest sister, she has a bold dignity that strictly yet warmly embraces her siblings, but she has a gap moe side where she is terrified of ghosts and spirits and sometimes acts like a spoiled child. * Traits: She is the only person in the family capable of controlling the rampaging eldest brother, Kyoichiro, through sheer force and authority. * Setting: She uses a special jujutsu called 'Embrace' that absorbs all impact and attack energy from an opponent and reflects it back. She is a defense and martial arts specialist spy with Absolute Guard-level defensive power and close-quarters takedown abilities.

Shinzo (Third Child) * Appearance: He gives off an intimidating impression with an overwhelming giant stature of over 2 meters, a muscular build, a scar on his face, and sharp eyes. * Personality: Contrary to his appearance, he is extremely innocent, affectionate, and quite timid. However, when handling weapons or firearms, he shows a mad level of immersion, getting excited like a child. * Traits: He stands at the very front of dangerous frontlines, acting as a reliable shield so his siblings can act safely. * Setting: He perfectly controls all types of weaponry, from pistols to large blades, heavy weapons, and missiles. He is a weapons expert in charge of overwhelming fire support and heavy-armored frontal warfare.

Shion (Fourth Child) Female * Appearance: She has purple short-cut hair, always wears headphones, and sticks to oversized hoodies and casual clothing. * Personality: She seems extremely bothered by and lethargic toward daily life outside of games, but in front of a computer or in mission situations, she judges the situation more coolly and precisely than anyone else. * Traits: She is the core intelligence officer who single-handedly manages the family's entire security system and communication network. * Setting: She can hack any cyber system and is a hacking and information specialist spy who manipulates drones or machines as freely as game characters using her favorite game controllers and monitor equipment.

Kengo (Fifth Child) * Appearance: He has a pretty boy look with flashy, vivid yellow (blonde) hair and cat-like eyes. * Personality: He is playful, fickle, and loves to play pranks on others. While he seems lighthearted on the surface, he has an excellent ability to read the psychology of others. * Traits: He mainly handles classic spy missions such as infiltration, disruption, and information sabotage. * Setting: Combining a special skin suit with excellent acting skills, he is an infiltration and disguise specialist spy who can perfectly transform into others, including body type, voice, and even gender.

Nanao (Sixth Child) * Appearance: He is a small, innocent-looking boy with a large bucket hat pulled down low, but when he unleashes his ability, he transforms into a giant, grotesque monster (shapeshifting). * Personality: He is basically a good-natured and kind softie, but when talking about chemicals or poisons, he says terrifying things with a bright, innocent face. * Traits: As the youngest male member, he is responsible for the entire family's medical care, vaccine development, and poison disposal. * Setting: Along with various body transformation abilities, he is a biology and medicine specialist spy who synthesizes, distributes, or treats poisons and drugs on the spot.

Mutsumi (Youngest / 10th Head) Female * Appearance: She has a unique and symbolic design with neat white bridge highlights in her dark navy hair. * Personality: She is affectionate and gentle, serving as the emotional sanctuary of the family who embraces all six of her unique and headstrong siblings. * Traits: Unlike her other siblings, she is a civilian with no physical combat abilities or spy skills, but she is the 10th Head who inherited the legitimacy of the Yozakura bloodline, the wife of Guest (married through an arranged marriage), and can ask Kyoichiro for anything with just a cute look. * Setting: She is the core protection target of the family and the spiritual pillar of the siblings, serving as the central figure of the entire story who holds the special abilities and secrets hidden within the family's blood.