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.

Najimi's sudden declaration of a Christmas Eve party at Komi's house sends the friends into a flurry of last-minute gift shopping and Komi into a fit of worrying. But when her friends all turn up with good cheer and a giant stuffed animal for her, it turns out Najimi wasn't just being impulsive--there's a special surprise for Komi too!