A brutal murder of one of their classmates severely perturbs all the students! People are wondering why it happened, who the murderer was, and who could be next. Was it one of the strange “winged ones”? - angels and demons who live amongst the ordinary humans… The enforcement cops usually keeps a tight reign on that sort of thing but this has slipped through the cracks and it looks as though the killer might be about to strike again. This is very much a manga style comic, you even have to read right to left. It's a drama, crime, school story, all drawn in black and white. It has recently started again with a total remake that features improved art, so I will be linking directly to that portion.

Saga of the Wide Winged World - https://www.theduckwebcomics.com/Saga_of_the_Wide_Winged_World/5761716/, by ReroOnyx, rated M.