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...
Even in sentai or bishoujo series,
،حتّى في سلسلات من صنف سينتاي أو بيشوجو
Incluso en series de héroes y chicas,
En series de héroes y heroinas
Vers le milieu des séries
de héros ou de magiciennes,
Anche nelle serie sentai e bishoujo
Mesmo em sentais ou séries bishoujo,
В аниме про девочек или войну