With the popularity of "action heroines", many districts have had local heroines of their own, complete with live action hero shows. In Hinano City, Mikan Kise takes her younger sister Yuzuka to a hero show of the most popular local heroine, Kamidaio, only to discover the show had been cancelled at the last minute.

Watching the show online, Misaki is surprised to see the girls sticking to the script that included her role. Just then, Mikan begins adlibbing, throwing in a plot element that reflects the turmoil Misaki is going through and their desire to support her.