In order to defeat Impurities that turned out to be far stronger than expected, Itsuki is pressured to perform a "Double Love Ritual" with two maidens at the same time. It is said to produce powerful Star Children, but it has never been performed before. Itsuki steps into uncharted territory, following the lead of onee-san maidens Reone and Falun.
Actually, there's this Double Love Ritualー
ーفي الواقع، هنالك موضوع طقوس الحبّ المز
Das letzte Mal haben wir über
das Doppel-Liebesritual …
Antes hablaba de un Doble Ritual de…
Antes hablaba de un Doble Ritual de…

En fait, ils m’ont parlé
de double ritu…
Per la verità, c'è questa cosa
chiamata "Doppio Rito d'Amore cheー
Na verdade, me falaram sobre
o Ritual Duplo dos Amantes...
Уже придумали Двойной 
Любовный ритуал...