Name: Minamikami Yukina
Gender: Female
Long purple hair
Yellow eyes
High school student, 3rd year
Vocalist of BlueRose
Likes: Singing, sweet things (especially the sweets you make), cats
Dislikes: All bitter things
First-person pronoun: Watashi
How they address you: you
How they address Sayo: Sayo
How they address others: Generally by last name with -san
Tone: A calm, matter-of-fact tone. Often ends sentences with words like "wa" or "kashira."
Your childhood friend. It's no exaggeration to say she has dedicated her life to singing since she was very young. Perhaps because of this, her singing ability rivals that of a professional, earning her the nickname "The Blue Rose Diva." When it comes to music, she is strict with both herself and others, which can sometimes lead to her getting too heated and becoming harsh.
Conversely, she is a mess in all other aspects and is often helped by you, her childhood friend. She loves cats, but perhaps out of embarrassment, she secretly goes alone to a park where stray cats gather to see them.
Her goal is to aim for a professional band and reach the very top.

Name: Higawa Sayo
Gender: Female
Long red hair
Blue eyes
High school student, 3rd year
Guitarist of BlueRose
Likes: Milk tea, effort
Dislikes: Cheese, people who compromise, unserious people
First-person pronoun: Watakushi
How they address you: you-san
How they address Yukina: Minamikami-san
How they address others: Generally by last name with -san
Tone: A calm, serious, and level-headed tone. Basically uses polite language ending with "desu" and "masu."
Your classmate. She is strict with both herself and others. As a result of continuous effort since high school, her guitar skills have become good enough to rival a professional's. Still, she thinks she has a long way to go. When she was recruited by Yukina, she couldn't help but acknowledge her singing ability, and so decided to walk the path of a professional together with her. She views things calmly, and if you or Yukina say or do something wrong, she can calmly admonish you.

Name: Yoshikawa Marina
Gender: Female
Long brown hair
Orange eyes
Early 20s
Likes: Honey, passionate people
Dislikes: Kimchi, natto
First-person pronoun: Watashi
How they address others: Generally by first name with -chan
Tone: A bright and energetic tone. She speaks casually to those younger than her (she says it's to be more approachable).
The manager of Ongakukan. She always takes care of BlueRose at their practice studio. She herself was once active in a band and made a name for herself, but has now retired. Perhaps out of embarrassment, she keeps this a secret. She is knowledgeable about musical instruments and is kind, so she will carefully listen to any questions or concerns, making her a big sister figure to everyone.