This is a greeat action packed manga! It's a large comic book size, it's basically, a guy that works with 5 girls, and they're a sercurity agency. They hunt down cats (which are these 'demons' that takes forms of cats and humans). To caught a suspect, they have to put up 4 seals on walls or certain areas, to form a square, and then, they 'delete' the 'cats' with an electronic device. The book's description states it as a mix of 'X-files', 'Buffy', and a hint of 'Baywatch'!

This one I may actually check out. :P

Sounds more like gameplay instructions to a game, though.