Itsuki and Mahiru performed their first Love Ritual. A "Star Child" that will be able to cleanse the Impurity was born, as they bonded through physical contact. Later, they were transferred to "Hoshigami Academy," where the "maidens of the 12 constellations," who will perform the Love Rituals with Itsuki, were gathered. Itsuki starts to bond with one of the maidens, Ruka, at the cherry blossom viewing welcome party.
The Stardust Labyrinth has 12 separate bottom 
layers, dedicated to each constellation.
تملك متاهة ستاردوس اثنتي عشرة
.طبقة سفلية متفرّقة مُخصّصة لكلّ برج
El laberinto tiene 12 niveles
dedicados a cada constelación.
El laberinto tiene 12 niveles
dedicados a cada constelación.

Dans ce labyrinthe, il y a un étage
Il Labirinto delle Stelle ha 12 piani sotterranei,
uno per ogni Costellazione.
O labirinto tem 12 camadas inferiores,
uma para cada constelação.
В Лабиринте Звёздной пыли есть двенадцать 
уровней. По одному на созвездие.