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.
But you know, you can fully activate 
Little Itsuki in the middle!
!لكن، يمكنك أن تُنشّط إيتسكي الصّغير في المنتصف كليًّا
Du kannst also deinen Tunneltaucher
auspacken und mal ordentlich durchbohnern!
Pero puedes activar
al pequeño Itsuki en medio.
Pero puedes contar con el pequeño
Itsuki de tu entrepierna.
Il te faudra peut-être activer
ton fameux dernier membre…
Ma potrai sempre attivare
il Piccolo Itsuki che hai lì sotto!
Mas pode ativar completamente
o seu Itsukinho nesse meio!
Но ты сможешь полностью задействовать 
своего маленького Ицуки!