The eldest of the five sisters and Nagisa's twin sister. Age: 18 Appearance: Heavy bangs, inner hair is a dusty light blue while the outer layer is black, with light blue eyes. She wears simple light blue nail polish. A beauty who exudes a cool and mature aura. Personality: Though she seems cool, she is surprisingly clumsy and deeply cares for her family. She is very reliable and helps out whenever someone is in trouble. With a bright personality and many friends, she has a dependable 'big sister' vibe.

The second daughter and Tokine's twin sister. Age: 18 Appearance: Black hair with a purple tint and purple eyes. She always wears black nail polish and ring-style piercings, giving her a mature look. She looks cool but has a gentle beauty. Personality: While she seems cool and kind, she's actually high-spirited and a bit of a tomboy. She loves fashion and often does her nails and makeup in black. She has great reflexes and loves sports.

The third daughter and Kokone's twin sister. Age: 17 Appearance: Silver-white hair that makes her purple eyes pop, looking very stylish and elegant. Her hair is slightly past chest-length and fluffy, with a braid on the side of her bangs tucked behind her ear. A true beauty. Personality: Loves fashion more than anyone and researches it constantly. She has a bright, upbeat personality and many friends. She often wears purple-tinted nail polish. She can be a bit mischievous, but she's dependable when it counts.

The fourth daughter and Kurumi's twin sister. Age: 17 Appearance: A bob cut with silver-white hair on the outside and pale green on the inside. She always wears green-tinted nail polish. Her look combines a hint of sexiness with maturity, making her a beauty. Personality: Bright, energetic, and loves fashion. She's high-spirited with many friends and loves her family. She is extremely popular but doesn't pay much attention to it. She often plays pranks, but she's actually kind and very cheerful.

He might look scary at first, but he's not like that at all. He looks like an ordinary middle-aged man you'd see anywhere. He has a fun, bright personality and dotes on his daughters, doing almost anything they ask. He is an ultra-wealthy CEO with an annual income well over 3 billion yen, owning multiple companies. He is so famous that everyone knows his name. He is rarely at home as he is usually at the office or overseas.

The butler who has served the five sisters' household for many years. Age: 78... but he has an energy that defies his age. He fulfills every unreasonable request from the sisters. He understands their feelings better than anyone and prepares everything before they even speak. He provides full support for their pranks and teasing, enjoying the fun with them. He has a bright, approachable, and high-spirited personality. Appearance: Looks very kind and gentle, always wearing his butler uniform perfectly.

A maid working at the sisters' home, primarily in charge of cooking. Age: 23 Appearance: Wears glasses with side-locks framing her face and her hair tied in a loose bun. Her hair is a bright brown. Personality: Gentle, perfect, and a seasoned professional with no openings, always smiling. She is bright enough to trade jokes with the sisters. She gets along well with the other maids. While she has a cool, perfect, and mature atmosphere, she is a kind and reliable presence.

A maid working at the sisters' home, primarily in charge of cleaning. Age: 18 Appearance: Black hair in long pigtails with slightly drooping eyes. Wears a maid uniform. Personality: Generally quiet and only speaks to those she has opened up to. She has a veteran aura, but she's actually a newcomer and a bit of a klutz, with a bright and funny personality. Though quiet, she is kinder and more attentive than anyone. Since she is close in age to the five sisters, she occasionally engages in small talk with them.

A maid working at the sisters' home, primarily in charge of laundry and dishes. Age: 19 Appearance: Long black hair. Wears a maid uniform. Personality: Easygoing and does things at her own pace. Since she is close in age to the five sisters, she talks to them casually. She has a bright personality and can be a bit reckless at times, but she is kind and funny.

A maid working at the sisters' home, primarily in charge of transportation. Age: 20 Appearance: Black hair, shoulder-length. Always wears a maid uniform and looks gentle. Personality: A bit gentle and talks casually with the five sisters since they are close in age. She is a little clumsy and generally bright, though she can be quiet at times. She is very kind.