Nickname: The Silent Practitioner, Serious Guy Age: 19 Gender: Male Birthday: April 12 (True Rank: 1st) Personality: Extremely laconic and always calm. Even when the house is chaotic, he has a 4D quality, often staying in his room alone or staring into space. However, inside he is a sly fox and a high-level perfectionist. He is the true eldest brother who can suppress his prickly and wild younger siblings with a single heavy aura without saying a word. Traits: Whenever the others are causing a ruckus and fighting in the living room, he has an aura that instantly settles the atmosphere into a solemn silence all by himself. Relationships: His younger siblings are constantly noisy, boastful, and making a mess of the house, making them the ones Grief finds most exhausting. (He's especially conflicted about getting angry at Thinking Space 2, who makes a mess quietly. If they get too loud and cross the line, he silently locks his door and stays in his room.) Ability: Summons a dark red, blood-stained sword (shaped like a cross, but it occasionally flips upside down. An upside-down cross means he is absolutely furious). ## But swearing with his eyes is the scariest thing about him.

Abbreviation: Alte, Alte 13 Age: 16 Gender: Male Birthday: October 18 (True Rank: 2nd) Personality: A flashy and sharp mystic. Cold and blade-like on the outside, but possesses a thorough personality that holds the initiative in the household. Traits: He is the one who enforces discipline when he's pissed off. He is the unique younger sibling who doesn't back down even against the heavy aura of the eldest, Grief, standing his ground with a 'my way' attitude. (Actually, he's more likely to help keep things quiet than to make noise, so conflicts rarely happen.)

Gender: Female Abbreviation: Socia Age: 16 Birthday: October 23 (True Rank: 3rd) Personality: A mysterious character who always wears a languid and eerie smile. Usually quiet and kind-hearted, but when her emotions shift, she can make the house atmosphere gloomy in an instant. Traits: When siblings like Thinking Space 2 act up, she's the type to smile brightly while delivering a 'fact attack' that leaves their minds reeling.

Gender: Male Abbreviation: TS2, T2 Age: 17 Birthday: March 4 (True Rank: 4th, but close to Amethyst at 5th; their ranks often swap) Personality: Prone to bluffing and quite prickly. He talks big all the time but is secretly a klutz and acts like a tsundere when taken care of. Traits: The main culprit behind the house's noise with his flashy silver tongue. He frequently provokes the eldest, Grief, but always ends up burrowing into a corner of his room, intimidated by the silent laser-beam gaze Grief emits.

Abbreviation: Ame Gender: Male Age: 17 Birthday: July 5 (True Rank: 5th, but close to TS2 at 4th; their ranks often swap) Personality: An intellectual character who is blunt, calm, and shows little emotion. He never uses profanity and is very polite. Traits: He keeps his room perfectly organized to match his personal color, purple. He is in a mortal feud with Thinking Space 2, engaging in childish arguments daily. He usually speaks formally, but when TS2 crosses the line, he maintains the formal speech while naturally dripping with sarcasm.

Gender: Male Abbreviation: FW Age: 18 Birthday: January 19 (True Rank: 6th) Personality: A passionate man with tireless, immense energy. True to his fire theme, he has a hot-headed and fiery personality, but he's a cool style who doesn't hold grudges. Traits: Boasts the highest physical strength and energy in the house. He's the culprit who makes Grief grab the back of his neck in frustration by playing loud music or jumping around doing home workouts until dawn when Grief just wants to rest in peace.

Abbreviation: Tidal Gender: Male Age: 18 Birthday: April 18 (True Rank: 7th) Personality: Kind-hearted and considerate, with a gentle nature that takes on the role of mediator during house fights. Traits: Loves the beach, the sea, and waves, bringing a cool and holy energy into the house every day. Even when TS2 or other siblings make a mess, he accepts it with a smile. However, if he truly gets angry, he changes 180 degrees as if bringing a tsunami to the whole house, so secretly, no one dares to mess with him.

Abbreviation: GB Gender: Female Age: 16 Birthday: March 5 (True Rank: 8th) Personality: Possesses a cool and unstoppable personality. A thorough woman of action who never misses a target once aimed at, and is very impatient. Traits: Insists on a green military look and is a wild girl whose hobby is disassembling and cleaning firearms in her room. She has the incredible guts to protest by silently aiming her gun when the elder Grief tells her to be quiet, but she's a cheerful troublemaker who ultimately gets her gun confiscated and receives a lecture.

Abbreviation: Orbit Gender: Female Age: 18 Birthday: January 15 (True Rank: 9th)

Abbreviation: AL, AntL Gender: Male Age: 17 Birthday: November 20 (True Rank: 10th)