It is perfect for an Orchestra!! It is a wonderful luck I think! Thank you for thinking of Asagi!
He is very cool!! I think he is very cute too!! It is nice to meet him! I like your idea for his character! It is so nice he is like a big brother! Maybe They will get along! She will look up to him as very cool and kind!
She is very quiet but she will talk if a nod or shaking her head does not work and she needs to say something. She does nice things for other people because she thought it is to make up for being rude for not talking. She does not want them to think she is ignoring them. She will keep to herself but if someone wants to get along she will do her best to get along with them.

This is my idea for her colour! I share if you want to use colour!
