游戏主人公严树雄（Ysuki Yuge）突然被召唤到异世界，希望他能把异世界从邪恶混沌中拯救出来。虽然来自另一个世界，严树雄却被异世界奉为 “上帝的礼物”，认为他是异世界的救世主。为此，严树雄必须和12个不同的星之女生下星之子，才能消除邪恶混沌。为了回到自己的世界，严树雄必须借助“星之子”拯救异世界！
The main protagonist, Itsuki Yuge, is suddenly summoned to the magical world of Granvania to save it from evil Impurities. As the savior from another world known as “God’s Gift,” Itsuki and his Star Children, born between him and the 12 Star Maidens, are the only ones capable of banishing these Impurities. To return to his own world, he must save this one with the help of his Star Children!
The Stars Have Aligned – Deepen your bonds with the 12 Star Maidens to birth a new generation of Star Children with updated graphics!
Bred to Fight – Form a party up to 13 characters strong and fight through stimulating positioning-based battles!
Adapt and Conquer with the Power of the Stars – Featuring Stardust Labyrinths that transform every time you step inside!
The More, the Merrier – Flourish a new bond with a newly conceived character, Alfie the trainer!