Naoya Touhara

The main character of the series. When the Yggdrasill tree activates and allows one of Lotte's servants to enter the human world, he is taken back to become the first member of Lotte's harem, much to Lotte's chagrin and encountered Lotte's mother roughly eleven years ago when he was 12, and then again a few years later when she brought him Asuha, his daughter from said encounter. Later in the anime he begins to fall for Lotte.