

Rin Tsuchimi, a normal seventeen-year-old second-year high school student finds himself sought after by a variety of girls. Eight years prior, he lost his parents in a car accident that also took the life of Kaede Fuyou's mother. From that point onwards, he began living with her. At around the same time he lost his parents, he met Lisianthus and Nerine at different times who each were accompanying their fathers on a diplomatic business in the human world. Each girl became lost after wandering through the human world. During that time, Rin befriended each girl after playing with them for a day. As a result of his kindness, Rin finds himself as the potential marriage candidate for both Lisianthus and Nerine, the daughters of the king of the gods and king of the demon worlds, who recently transfer to Rin's school.

Rin is enjoying a rather normal life living with his childhood friend Kaede due to family deaths on both sides. One day at school, two new classmates transfer into his class: Lisianthus, heiress to the Realm of the Gods, and Nerine, heiress to the Realm of the Demons. Rin is told that he has been picked to marry either one, though it will be his choice as to whom.
Aired: 7/7/2005
After a few days of adjusting to his new neighbors, Rin is starting to find it hard to cope with the recent changes in his life. Eventually, he starts to walk to and from school alone and one day while walking from school he meets a girl named Primula from the Realm of the Demons who is very attached to him, literally. When she comes home with him later, it is decided that she will live in Kaede's house from now on.