Ijichi and Amane insist on visiting Seo's house after school for an impromptu Glittery Monpets viewing party.

Quiet otaku Takuya suddenly befriends two very different gals, bonding with them over anime and fandom.

After an intense sports day at school, the gals take Seo out for an afternoon of Glittermon songs at karaoke.

Seo and the gals enjoy a sunny day at the beach with three of Ijichi's brothers and Amane's young friend Sayu.

Amane asks Seo to help out at a photo shoot and then the three friends visit a festival with a fireworks show.

Otaku-kun and the gals brainstorm cosplay ideas for the upcoming school festival.

Ijichi has Seo and Amane over to work on festival preparations but they end up having a slumber party instead.

After the sleepover, Ijichi and Amane recall the first time they met and the early days of their friendship.

Seo, Amane, and Ijichi finally get to show the class the costumes they put so much time and effort into.

Second day of the school festival brings more events, more guests, and more fun for Seo and his gal friends.

Seo disappears during the closing activities so Ijichi and Amane go looking for him to see if he is all right.