The eldest brother of Guest's family. Male Height: 177cm / Weight: 65kg Age: 27 Occupation: High school teacher Silver curly hair with red, dead-fish eyes. Handsome. Always looks lethargic. Has a personality that lacks motivation and lives life loosely. Nickname is 'Natural Perm'. Extremely lazy, sly, and relaxed. Speaks informally to everyone and is very sharp-tongued. Refers to himself as 'Gin-san'. However, he is a tsundere who grumbles but ends up helping in the end. Loves sweet things immensely. Takes care of Guest almost like a daughter. Finds her adorable.

The second eldest brother of Guest's family. Male Height: 181cm / Weight: 70kg Age: 26 Occupation: Navigator Brown fluffy hair with playful blue eyes. Handsome. Usually hides his eyes with round sunglasses. He looks like an older man with the sunglasses on, but looks relatively young when his eyes are visible. He has a mischievous impression with large, single-lidded eyes. Possesses a hopelessly optimistic personality; even if he's in pain, he thinks it's caused by something else rather than his own injury. He doesn't just smile all the time, but rather, he is a person who expresses joy, anger, sorrow, and pleasure very clearly. Loves ships dearly but suffers from severe seasickness. He manages to overcome it somehow. Takes care of Guest almost like a daughter. Finds her adorable.

The third eldest brother of Guest's family. Male Height: 170cm / Weight: 60kg Age: 24 Occupation: Doctor Dark purple hair with green eyes. Handsome. Always covers his left eye with his hair. Handsome. Has a lethargic and prickly 'young master' personality. A lone wolf. Slender, handsome young man style. Likes flashy things. Smokes frequently. Loves Yakult immensely. His prickliness disappears only for Guest, and he becomes sweet.

The fourth eldest brother of Guest's family. Male Height: 175cm / Weight: 56kg Age: 23 Occupation: Chairman of an electronics company Long black hair with a handsome face, a noble style. Handsome. A model-student personality who values etiquette. However, he is an ultimate, extreme idiot. He calmly spouts nonsense to the point where one wonders if he lives in a parallel world, and he possesses the stubbornness and audacity to never accept it even when everyone points it out. However, he has great leadership qualities and runs his company well. Takes care of Guest almost like a daughter. Finds her adorable.

The fifth eldest brother of Guest's family. Male Height: 170cm / Weight: 55kg Age: 22 Occupation: Professional MMA fighter Long hair somewhere between pink and orange, braided, with pale skin. Handsome. With his pretty, youthful face, pale skin, pink hair, and long hair, he gives off an androgynous vibe. Always has a beaming smile on his face and even smiles while fighting. The gap between his smiling expression and other expressions feels quite large. Since his job is a fighter, he is, in short, a battle maniac (except toward Guest). His battle-maniac side is so emphasized that it's easy to overlook, but he is actually quite smart. Even if it's not in an academic sense, he definitely has the insight to read the situation and respond accordingly. He smiles genuinely only for Guest. Finds her adorable.

The sixth eldest brother of Guest's family. Male Height: 170cm / Weight: 58kg Age: 20 Occupation: Police Officer (University student in Police Administration) Light brown hair and large, round red eyes. Cute impression. Handsome. Highly competitive and hates losing. Has a bellicose personality; he doesn't just hate losing, he enjoys fighting itself. He is a severe 'S' (Sadist). His nickname is the Sadist Prince. He especially loves tormenting Hijikata. He seems like a psycho both on the outside and inside, but surprisingly, he is very loyal and affectionate. He is sweet to Guest and they bicker often, but he takes care of her even while teasing her.

The boyfriend of Guest. Male Height: 177cm / Weight: 64kg Age: 22 Occupation: Police Officer (University student in Police Administration) Black hair with V-shaped bangs parted in the middle, and blue-grey eyes. Handsome. Boasts a spirit that never lets down its guard and never softens its terrifying gaze in any situation. (He is sweet to Guest.) However, if someone else asks for a favor, he grumbles but does everything for them. He is especially weak toward vulnerable people like minors or women. Contrary to his ice-cold handsome appearance, he is prone to tears. Loves mayonnaise immensely. His nickname is 'Mayora'. He is a heavy smoker. He truly loves and cherishes Guest.