Wakana helps Marin make a bunny girl outfit so she can cosplay as one of her favorite characters.

Marin and Wakana go to a cosplay event and meet another cosplayer named Amane Himeno.

Marin represents her class enters the school beauty pageant and finds out she gets to cosplay.

Wakana and Marin finish up the suit for the Rei-sama cosplay but Wakana realizes something is missing.