Miu is one of the waitresses who fulfills the older sister trait. She usually wears glasses and is a dōjinshi artist in a group called "Hanazono Folder" that mostly draws adult yaoi and straight. Miu initially came to the cafe as a customer, then Dino scouted her and she accepted to get inspiration for her dōjinshi. As a result, one of her hobbys is observing people. Wikipedia