The rainy season's here, and the Defense Club is dedicating themselves to various indoor activities. Suddenly, they realize that Mr. Tawarayama -- whom Wombat is controlling under the pretext of preserving his life -- is covered in mold! The club erupts into chaos. Just then, Kinozaki and Tazawa of the Press Society burst in looking for material for a story. Kinozaki chases them around, trying to learn their secret, which stresses out Wombat, Yufuin, Naruko, and Zaou.
There's a mysterious cosplay group 
causing a ruckus around the school lately...
Da gibt es eine mysteriöse Cosplay-Gruppe, 
die neuerdings in der Schule für Ärger sorgt.
Últimamente hay un misterioso grupo de 
cosplay causando alboroto en la escuela...
Últimamente, hay un misterioso grupo de 
cosplay causando alboroto en el instituto...
Di recente c'è un gruppo di cosplayer misteriosi 
che sta causando confusione a scuola.
Tem um misterioso grupo de cosplayers
 causando uma enorme confusão na escola...