Hige seems to know how to function the best in human society, even wearing a dog collar, although the true meaning behind his collar is revealed later in the series that is a tag/transmitter . He tends to use his intuition more than the others, but only when he's not thinking with his stomach instead. Hige is quite the ladies' man and is always on the look-out for a nice girl. He has the best sense of smell between the others. Hige seems to be a Himalayan wolf in the series. (Source: Wikipedia) Hige's name means "beard" or "whiskers" in Japanese.
Nagisa is a boy raised as a girl.
An old school friend of Ryousuke's father.
He was a noble man that helped Celiane and Apollonius fighting the Drak Angels until he betrayed them for his desire to become an angel himself. Beacuse of a vision, Reika thought that she was Celiane reincarnation but actually she is Scorpius reincarnation.
Kosaki's sister who is a school year younger. On her way to school, she is saved from some delinquents by a mysterious prince (actually Raku Ichijou) and ends up with his locket. Her first impression of Raku is negative as she observes that he is a womanizer who is trying to trick her sister and he is a pervert for looking at her panties. She also refuses to return his locket until Raku convinces her that he is helping the "prince." Unlike her sister, she is a good cook. She later reveals that she was helped by a guy in a mascot costume (also Raku) who treats her to ice cream. Later, she nurtures some feelings of love for Raku, but she later backs off, since she finds out that her sister, Kosaki, also has feelings for him. Instead, she decides to support her sister, despite her strong feelings for him.
Possibly the greatest troublemaker in Nube's class, Miki Hosokawa is known best for her big mouth, her vast spiritual knowledge...and her big bust! At the start, Miki was a mere tattletale, consistently chatting on and on about various rumors and such, especially if Nube was involved. But after a near-fatal encounter with a tattletale youkai, she begins to tone down her talking and starts focusing on more spiritual matters. Miki begins to do consistent research on various spirit and youkai manners, to the point where even her teacher came to her for things he may not know! While most of this is merely knowledge, she consistently looks for supernatural means to assist her, either for her rumor mill or to get rich quick. One of her most important spiritual developments was gaining the ability to become a rokurokubi, where she can spiritually stretch her head and neck to go undercover to anywhere she chooses. Extremely vain about her physicality, Miki prides in her growing buxom figure (she grows from a B-cup to an F-cup over the course of the series) and flaunts it whenever she can. Her name is an homage to a main heroine in another of the main Nube influences: Go Nagai's classic horror series Devilman. (Source: Wikipedia)