Personally, I think it's either Invisible girl, Lady Midnight, or Present Mic (I strongly think it's invisible girl And if it turns out it's present Mic I'll be heartbroken)
I don't think is one of the students simply because they couldn't have spread the location of the training camp since they didn't know where it was gonna be held. I personally think is either present mic or the teacher of the B class, since the 1-A was majorly targeted during the attacks and the 1-B was not
This still keeps me up at night. I think if the traitor is a student, it would be one that has good sneaky abilities.
who do you thin is the traitor?