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...
You have to find the thirteenth maiden 
and perform a Love Ritual!
!عليك إيجاد العذراء الثالثة عشر وتنفيذ طقوس الحبّ
Such schon den 13. Priester
und vollziehe das Liebesritual.
Tienes que encontrar al decimotercero
y hacer el Ritual de Amor.
Tienes que encontrar al decimotercero
y hacer el Ritual de Amor.
Tu dois chercher la 13e Prêtresse
pour effectuer le rituel.
Devi trovare la tredicesima Sacerdotessa
ed eseguire il Rito d'Amore!
Precisa encontrar a 13ª sacerdotisa
e fazer o Ritual dos Amantes!
Нужно найти тринадцатую деву созвездия 
для Любовного ритуала!