Conception

When the world of Granvania faces an impending crisis from the encroaching Impurities, its only hope lies in a hero summoned from another world. Enter Itsuki Yuge, a high school student abruptly thrust into a fantastical land where he discovers a unique destiny: to perform "classmating" rituals with the twelve "Star Maidens." Only through these sacred bonds can he create powerful Star Children, the only beings capable of vanquishing the darkness and saving Granvania. Itsuki's mission is clear, but navigating the personalities and powers of the diverse Star Maidens proves to be an adventure in itself. As he delves deeper into Granvania's mysteries and the true nature of the Impurities, Itsuki must embrace his role as the savior, even if it means mastering an unconventional method of heroism to protect this vibrant, endangered world.

✦ AI-drafted summary