Itsuki finds out that in addition to Stardust Labyrinths where the "Impurity Lords" dwell, there is also the 13th labyrinth, as well as the existence of the 13th maiden. He sets out to find the maiden. However, there is the possibility that the 13th is a male. Although not quite convinced, he seeks all the male candidates he could think of...
Bind me and put me on a shelf!
!قيّدني وضعني على الرّف
Steck mich als dein
Lesezeichen in dich hinein!
¡Mételo en ese estante!
¡Hasta el fondo de ese estante!
Écrasez-moi et rangez-moi
avec eux.
Rilegami e sbattimi su uno scaffale!
Me encaderne e coloque na estante!
Переплетите и поставьте на полку!