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.
They are supposedly stronger 
than the ones you've made so far.
.يُفترض أنّهم أقوى من الذين أنجبتهم حتّى الآن
Sie sollten noch stärker sein
als deine bisher geborenen Kinder.
Supuestamente son más fuertes
que los que hemos visto.
Se supone que son más fuertes
que los que conocemos.
Ils seraient plus puissants
que tes premiers.
Dovrebbero essere più forti
di quelli che hai generato finora.
Supostamente são mais fortes
que as nascidas até agora.
Полагаю, они будут сильнее 
двух предыдущих.