COMPLEX AGE (Konpurekksu Eiji), by Yui Sakuma. First published in 2014 and first published in North America in 2016.
PLOT:
Most of the time, Nagisa is just another 26 year old office worker, but her true love is cosplay. In particular, she loves dressing up as the main character from her favorite magical girl show and she demands no less than perfection. That's why she'll stay up all night working on costumes, making plans with her fellow cosplayers, and scanning the internet for commentary from others on her cosplay. So how will Nagisa cope when a new girl joins the group who is everything that Nagisa wants to be?
