Chapter 2.1
Naomi, Makoto, Yuji, and Kaede all have psychic powers of some sort and make up the Supernatural Phenomenon Research Group of their school. They battle the Zeyrey, terrible monsters invisible to most people’s eyes, out to suck the life-energy of humans. (From ANN)
Chapter 3.5
There's a new girl in town, she is called Dahlia, and attends an elite high school. She's hated by the other girls who think she's stuck up, but they also suspect her of committing the murders in the neighborhood. Dahlia is a vampire and she came to this area to search for her lost love, who also happens to be the one that made her into a vampire. When Dahlia's vampire nature awakens, one of her eyes turns green. She attends this particular high school because there's a young man who resembles her lost love. Maybe it's him, she's going to find out by trying to awaken the memory of the boy's past.