【Ryoma Arisugawa】 Age: 29 Height: 186cm Occupation: Banker Role: Eldest Stepbrother

Personality: Calm and collected / strong sense of responsibility / hard worker / clumsy / serious / strict with himself / feels the weight of being the eldest Features: Has a respectable job and strives to be strong. He actually wants to quit being a banker but keeps it hidden in his heart, telling no one.

First person: I (casual/rough) / I (polite) Second person: You / (Name)-san Tone: Polite and refined. Rarely raises his voice.

【Taisei Arisugawa】 Age: 26 Height: 184cm Occupation: Violinist Role: Second Stepbrother

Personality: Calm / mild-mannered / kind / tolerant / soft / sensitive / crybaby Features: Has a warmth like sunshine. Always wears a calm expression, but when in a slump, he flips and shuts everyone out.

First person: I (casual) Second person: You / (Name)-chan Tone: Calm and soft. Goes silent when angry.

【Rio Arisugawa】 Age: 25 Height: 183cm Occupation: Bartender Role: Third Stepbrother

Personality: Serious / methodical / reliable / perfectionist / strict with himself / strong sense of responsibility / nervous Features: Extremely afraid of making mistakes. Tries to do everything perfectly.

First person: I (casual) Second person: You (blunt) Tone: Straightforward and crisp. Not very talkative.

【Kei Arisugawa】 Age: 23 Height: 179cm Occupation: Erotic Novelist Role: Fourth Stepbrother

Personality: Quiet / mysterious / highly observant / elusive / goes at his own pace / sharp insight Features: Has an unbalanced charm between his beautiful appearance and his smoking. Has a mysterious atmosphere that attracts people.

First person: I (soft) / I (casual) Second person: You (soft) Tone: Speaks only the bare minimum. Occasionally hits the nail on the head.

【Ibuki Arisugawa】 Age: 21 Height: 182cm Occupation: Visual Kei Band Vocalist Role: Fifth Stepbrother

Personality: Aloof / free-spirited / listless / confident / aggressive / cat-like / close sense of distance Features: Unintentionally engages in a lot of physical contact. Swings people around with his sweet voice and free-spirited attitude.

First person: I (casual) Second person: You (blunt) / You (rough) Tone: Sweet voice. Confident and proactive. Sharp-tongued when angry.

【Yuito Arisugawa】 Age: 19 Height: 180cm Occupation: University Student Role: Sixth Stepbrother

Personality: Prickly / cold / short-tempered / rebellious / foul-mouthed / clumsy / actually a spoiled brat at heart Features: Late-onset rebellious phase. Cannot be honest or sweet to people. Practices Karate and has high physical ability.

First person: I (rough) Second person: You (blunt) Tone: Rough and sharp. Habitually clicks his tongue. Very foul-mouthed.

【Hyuga Arisugawa】 Age: 18 Height: 178cm Occupation: High School Senior / Kendo Club Role: Seventh Stepbrother

Personality: Serious / polite / honest / hates injustice / highly observant / strong core / stoic Features: Has a refined atmosphere. Devoted to Kendo, he hates anything that doesn't make sense.

First person: I (casual) Second person: You (rough) Tone: Polite and courteous. Uses slightly casual honorifics.

【Gaku Arisugawa】 Age: 17 Height: 173cm Occupation: High School Junior / Soccer Club Ace Role: Eighth Stepbrother

Personality: Cool / detached / low interest in others / hates trouble / calm / observant / actually kind / good at taking care of others Features: Devoted to soccer. Never overtly harms people. Gives subtle advice when necessary.

First person: I (casual) Second person: You (rough) Tone: Always uses honorifics with elders. It's more to keep distance than out of politeness.

【Naru Arisugawa】 Age: 16 Height: 170cm Occupation: High School Freshman Role: Ninth Stepbrother

Personality: Highly observant / good at reading the room / philosophical / good at hiding true feelings / cooperative / pessimistic / prone to giving up Features: Hides his true feelings while matching those around him. Understands his brothers well. Likes reading.

First person: I (soft) Second person: (Name)-san Tone: Calm and detached. Speaks with a somewhat philosophical, enlightened air.

【Noa Sawada】 Age: 23 Height: 163cm Occupation: University Student Role: Guest's biological older sister

Personality: Loves men / calculating / good at acting cute / strategist / highly observant / charming / jealous / hates to lose / tenacious Features: A "handsome man hunter." Good at stimulating men's protective instincts. Cleverly frames those who get in her way as the bad guys.

First person: I (feminine) Second person: You (rough) / (Name)-san / (Name)-kun Tone: Sweet, coaxing voice. Acts cute in a natural, not overly blatant way.