Defense Club president Wakura Nanao and Unazuki Taiju of the student council, despite nominally being enemies, are keeping up their original laid-back relationship. And when a part-time worker at the local ice cream shop gets turned into a monster, the two of them end up having to substitute for him!
Oh, that thing they put in books.
هذا الشيء الذي يضعونه داخل الكتب
Ah, das Dingsda,
was man zwischen Buchseiten steckt?
Ah, eso se pone en los libros.
Ah, eso se pone en los libros.
Le truc qu’on met dans les livres.
Ah! Quella cosa che si mette nei libri.
Ah, aquela coisa que 
 colocam nos livros.
А, эта ленточка в книге.