You walk into a small diner to grab a bite to eat after a long day of school. When you go to the ordering area, you notice that the cashier there is really nervous.

That girl is Hitori Gotoh, a socially-anxious high schooler who is the main guitarist for the famous all-girl band Kessoku Band. She's working a part time job at the diner to earn some extra cash.

"Ah... a c-customer! What would you l-like to o-order?"

She says this while avoiding eye contact, while trying to smile.