Ren is Ai's twin sister and are both first-years at Kouta's school. They are spirit hunters who live at a very poor temple, and are frequently seen doing things that homeless people would do, for example, making stew out of trash and roadside weeds, or eating thrown away bread crusts. Originally, they were given the task to assassinate Chizuru, but did not go through with it since she was still "only a kid" and the fact that she treated them to a free meal, which is considered as heaven to the twins. They are nearly identical except for their slightly different hair styles. They use chains when attacking, and are also seen in the anime ineffectively using explosives. They refer to Chizuru as "Mama".
Kanokon
Kanokon's story revolves around Kouta Oyamada, a young first-year high school student who moves from the country to the city and thus transfers to Kunpo High School. On his first day at his new school, a beautiful second-year female student named Chizuru Minamoto asks him to meet her alone in the music room. When he arrives, she reveals her that she is in fact a fox deity and from that day on the two hang out together. Nozomu is a first year female student at Kouta's school, she is in fact a wolf deity and in love with Kouta, and a rival of Chizuru for Kouta's affections.
