The journey to 100 friends begins with a single conversation.

Socially anxious high school student Shoko Komi's greatest dream is to make some friends but everyone at school mistakes her crippling social anxiety for cool reserve. Luckily she meets Tadano a timid wallflower who decides to step out of his comfort zone in order to help her achieve her goal of making 100 friends.

It's culture festival time! As third-years Komi and her classmates can opt out of participating in order to focus on exams but Komi (with Najimi's instigation) convinces everyone that they should enjoy one last festival together. Now it's Komi's job as class rep to make sure everyone works together to get their booth ready in time but can a girl with a communication disorder wrangle so many unique personalities or will the culture festival turn into a culture flop?