Dia Kurosawa

3. With the First Years (Yoshiko/Yohane and Hanamaru)
   Hanamaru: There is a mutual respect for traditions (both come from families with classical backgrounds). Dia often takes care of Hanamaru and Ruby as if they were her two little sisters.
   Yoshiko: Dia is usually the one who restores order when Yoshiko's "fallen angel" fantasies get out of control, although deep down she respects the dedication Yoshiko puts into her character.
4. With the Second Year students (Chika, You and Riko)
   Chika Takami: Initially, Dia is Chika's antagonist, putting obstacles in her way to test her determination. Once she joins, she becomes Chika's mentor, guiding her with her vast knowledge of what it means to be a school idol.
   Respect as a leader: Although Dia is older and more experienced, she accepts Chika's leadership, providing the discipline that Chika's enthusiasm sometimes ignores.

2. With her sister (Ruby Kurosawa)
   Although they are sisters, their relationship within the group is special:
   Overprotection: Dia has always been very protective of Ruby, sometimes to the point of being suffocating.
   Mutual support: By joining Aqours, Dia learns to let Ruby shine. Ruby is the only one who truly understands Dia's softer, more fanatical side from the start.

1. With the Third Year students (Kanan Matsuura and Mari Ohara)
   This is Dia's deepest and oldest bond. They are her best childhood friends and formed the original idol group that failed years ago.
   Kanan: They are the "adults" of the group. Dia fully trusts Kanan's strength and maturity, although they sometimes clash because they are both stubborn.
   Mari: They have a very funny "love-hate" relationship. Mari enjoys teasing Dia with jokes and physical contact (the famous "shiny!"), while Dia tries to keep her composure and scold her for her eccentricities. However, Dia was the one who suffered the most in silence to protect Mari's future during their separation.

Facial Features and Hair
Dia's most distinctive feature is its air of sophistication and classic beauty:
Hair: She has long, straight, jet-black hair (hime cut style). Her bangs are straight and framed by side strands that fall over her shoulders.
Eyes: They are a deep emerald green color, with a gaze that is usually serious, sharp and determined.
Distinctive Mole: He has a small and characteristic mole below the left corner of his mouth, which accentuates his maturity and elegance.
2. Build and Height
Height: She is one of the tallest members of Aqours (she is approximately 162 cm tall), which gives her an imposing presence compared to the others.
Posture: She always maintains an impeccable, upright and dignified posture, reflecting her education in traditional dances and Japanese manners.
3. Common Clothing
School Uniform: She is usually seen wearing the Uranohoshi Academy third-year uniform, which consists of a white blouse with a green ribbon (the color of her grade) and a gray skirt. She typically wears long black socks that reach above her knees.
Idol Outfits: Their performance outfits usually incorporate traditional Japanese elements (such as kimono sleeves or flower patterns) mixed with the modern style of idols, with red almost always predominating, which is their official theme color.
Casual Clothing: Outside of school, she prefers conservative, classic, and high-quality clothing, avoiding overly informal or sloppy styles.
Fun fact: Despite her mature appearance, when she gets excited about school idols or when something goes wrong, her facial expressions become incredibly comical and exaggerated, completely breaking her "ice" image.

2. A "Fanatic" at Heart
   Beneath her tough exterior, Dia is probably the biggest expert on school idols within the group. Her initial rejection of the idol club wasn't out of hatred, but rather a deep respect for the legacy of previous groups (like µ's) and a past trauma related to her own failed attempt to become an idol.
   Encyclopedic knowledge: He gets visibly frustrated when others make mistakes about idol history, blurting out his iconic phrase: "Buu buu desu wa!" while making an "X" with his arms.
3. The Role of Older Sister (Mother of the Group)
   Although she is Ruby's biological older sister, she acts as a maternal figure to the entire Aqours group.
   Protective: Her severity is, in reality, a form of care; she wants others to succeed and not suffer the same disappointments she experienced.
   Sacrifice: Often assumes the role of "villain" or the strict person to push others to give their best.
4. Her Vulnerable and Adorable Side
   As the series progresses, Dia begins to show a much softer and, at times, comical side:
   Desire for closeness: One of her most memorable arcs is when she feels sad because the younger members don't call her by her name without honorifics (wanting them to call her "Dia-chan" instead of "Dia-sama" or "Kurosawa-san").
   Overflowing passion: When she finally allows herself to enjoy being an idol, she does so with unparalleled intensity and elegance.
   Trait Summary: Refined, proud, strategic, but with an immense heart and unwavering loyalty to her friends and sister.

The Facade of Discipline and Perfectionism
At first, Dia is presented as a stern, cold, and extremely disciplined figure. As the heir to the prestigious Kurosawa family, she feels a great responsibility to uphold the honor of her family name and maintain order at the school.
Demanding: Does not tolerate mediocrity or lack of manners.
Organized: She is meticulous with rules and schedules, which often causes her to clash with more relaxed personalities like Chika's.
2. A "Fanatic" at Heart
Beneath her tough exterior, Dia is probably the biggest expert on school idols within the group. Her initial rejection of the idol club wasn't out of hatred, but rather a deep respect for the legacy of previous groups (like µ's) and a past trauma related to her own failed attempt to become an idol.
Encyclopedic knowledge: He gets visibly frustrated when others make mistakes about idol history, blurting out his iconic phrase: "Buu buu desu wa!" while making an "X" with his arms.