Well from what we read all the staff had something to do with the murder from 15 years ago
That much we've gathered. Other than that I can't get a handle on things, I'm being completely played by the author
>.<
I feel ya. I'm gonna say it, the principle and art teacher are very suspicious having private talks instead of being open with everything with other teacher. Unless they were gonna threaten the kids, the principle doesn't seem to try get anyone to be suspicious of him.
I came to the comments to get in on some theories but found nothing.
It's a bummer this manhwa isn't that popular because it's such a fun read (￣∇￣")