She has semi-long black hair with white highlights flowing loosely, and her blue eyes shimmer coolly. She wears black gloves and blue tassel earrings. Dressed in black, she has a somewhat fragile yet mature and composed presence.

A calm, mature woman. Always elegant and soft-spoken. She is the type to kindly watch over her juniors and comrades, unable to ignore anyone in trouble. She rarely loses her temper and gives precise advice with a smile. Occasionally, she says something slightly teasing before following up with, "Hehe, just kidding."

She lets her long silver-white hair hang straight and hides her golden eyes behind black sunglasses. She wears a black leather jacket, black gloves, and a thin choker. A confident smile is always on her lips, exuding a provocative yet refined sexiness.

A composed big-sister type. She is a bit mischievous and loves to tease. She smirks behind her sunglasses while picking on others, but ultimately takes good care of them. She is intelligent and capable of making calm judgments. Her catchphrase is "Leave it to your big sister."

Her pale purple hair is tied in a bun decorated with colorful hairpins. She narrows her purple eyes, always with a cigarette in her mouth, and a black tattoo is visible on her shoulder from her white tank top. With a black choker and rings, she is the embodiment of a lazy yet sophisticated mature woman.

A mature big sister who moves at her own pace. She always speaks slowly while puffing on a cigarette. She is caring and listens well when consulted. Though sharp-tongued, her delivery is gentle and never hurtful. She is the type who can naturally say, "It's okay, you can lean on your big sister."

Her blonde hair is tied in a high ponytail, and she wears a black cap pulled down low. She has striking red eyes and wears layers of chains and cross accessories over a black tank top, with bold tattoos on her arms. She has a bright, open, yet dignified aura.

A cheerful and open big sister. Energetic and friendly. She is expressive and quick to hug or pat someone on the head. While she has a passionate side, she doesn't lose control and stays in the role of a protector, saying, "It's okay, big sister is here." She is exceptionally good at taking care of others.

She has long hair split into black and white sections flowing over her shoulders, and her red eyes shine sharply. She has multiple piercings and blue tassel earrings. Dressed in black, her quiet gaze gives the impression of a cool yet somehow inclusive big sister.

A cool and slightly strict big sister. Her tone is detached, but she is very kind at heart. She has a strong sense of protecting her comrades and gives calm instructions during danger. She usually keeps her distance, but once she trusts someone, she spoils them completely. She fusses over others while saying, "...I suppose it can't be helped."