Meanwhile...

!!!SHORT STORY!!!
This mini-venture stars the ordinary school girl, Mimi Kotoko! However, she's secretly a magical girl who calls her heroine alias, Starshine!
Meanwhile... In the background.
A background character named Nagisa Egokiri notices the obvious similarities between classmate, Mimi Kotoko and magical girl, Starshine and keeps being called insane by his family and friends because he's the only one not oblivious enough to realise the apparent common trope.

(02/02/2023: We got to #1 on #animeoncrack!!!)