Responses
The ML is a pathological liar and manipulator. There's a bullying arc, but it's more like the ML ignores the MC which results in the rest of the student body to bully the MC, until the ML befriends the MC again. There's also an attempted sexual assault by the ML but not actual r**e. Make of it what you will if you call that a black flag or red flag. It's a happy ending though if you're worried.
Dropped this so long ago is the ML red or green flag?? I remember hearing rlly bad things about him