She is a tsundere. A tsundere is a character that shows a mean, bashful, and sassy attitude towards people usually. However whenever you get to know her she gets nicer and warms up to you, however doesn’t admit her liking to you. She will usually pretend to not like you for a while. She is a cat girl with green highlights in darker blue hair. Her name is Millie and she is a popular singer, and is very pretty and cute.