Tokyo Babylon 1999

Sumeragi sect and Sakurazukamori *1 sect, which are families of Onmyou magic, have been confronting each other since a long time ago. Kanayama Tomokichi has retired from the Sumeragi sect 10 years ago, and now he is teaching onmyou magic to 7 high school girls who are broken-hearted. But Kanayama is assassinated by Seishirou of the Sakuratsukamori sect. Girls take the textbook of onmyou magic from Kanayama's house, and they start to kill a cunning teacher and the bad boys by onmyou magic. Subaru, a present master of the Sumeragi sect, wonders if girls will be injured by evil spirits because they are still unskilled in the onmyou magic. So Subaru tries to stop their curses. But girls misunderstand that Subaru killed Kanayama, and they curse Subaru.
(Source: jhmd.jp)