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...
Men and women... I want to break 
that barrier and get past it!
!رجال أو نساء... أريد أن أكسر ذلك الحاجز وأتجاوزه
Egal ob Männer oder Frauen,
Hombres y mujeres.
Hombres y mujeres.
Hommes ou femmes.
Je veux pouvoir surpasser tout ça.
Uomini e donne...
Seja homem ou mulher, quero quebrar
essas barreiras e superar isso!
Мужчины и женщины... 
Я хочу преодолеть этот барьер!