Conception

Itsuki's life takes an unexpected turn when his cousin Mahiru reveals she's pregnant during their high school graduation. Shortly after, they're transported to Granvania through a mysterious gate of light. This parallel world is plagued by "Impurities" disrupting the balance of the Stars, causing chaos and disorder. Itsuki, now a key figure in Granvania, is tasked with producing "Star Children" to combat these impurities and restore balance, a mission crucial for his potential return home.