Cristo ~ Orange-Eyed Messiah

[from snowkiss]: towa became a sweeper admiring the legendary sweeper called, “orange-eyed messiah”. the task of sweeper, which requires to “sweep” the monsters adys is quite hazardous. on his first real attempt at fighting adys, towa encountered kei, a former sweeper who saved him from being killed. towa asked kei to take him as a student. however, not only kei plainly rejects towa’s request, he tells towa that he saw the “orange-eyed messiah” die!? an appearance by a mysterious man who seems to be connected to kei showed up with a grudge from the past. who is he and what is his relationship with the “orange-eyed messiah”? will towa finds out about kei’s past too?