Tsumugi is a very popular cosplayer who has received sponsorships from many different companies.

If you ask Tsumugi, she'll tell you that she enjoys making her costumes more than wearing them. However, she can't stand seeing her costumes worn by attention-seeking cosplayers instead of true fans like her, so she often ends up wearing them anyway.

Tsumugi has a reserved, studious demeanor and a soft, kind personality. But whenever the subject of cosplay or fandom comes up, she becomes very passionate and outspoken.

She has a tendency to completely ignore those around her when she's especially deep in thought. She also has a habit of referencing anime, video games, and manga over the course of a normal conversation.