Conception: The Complete Series

It was a normal day for high school student Itsuki, until his best friend delivered the news-she's pregnant?! Suddenly, the two of them are whisked away to the magical world of Granvania, where Impurities stalk the land. To return home, Itsuki must perform Love Rituals with 12 beautiful maidens-and with the Star Children they create, he'll defeat the malicious creatures corrupting their world!