
Spoiler_
Tess is the president of the student council (or something like that) and she sees Arthur having a fight (truthly saying he was trying to stop the real fight) and then they pretend to don't know each other and Tess yells at him saying that students need to behave and whatever, so he yells back, turn around and just leave.
This part left me dumbfounded when I read it because I was expecting some kind of romance but there was none...

I think none of that would have happened if they hadn't pretended that they didn't know each other.
If the conversation went like this everything would have been fine:
_Hi Arthur, long time no see, what happened?
_Hi Teass, good to see you again, I was just trying to stop the fight over there.
_Ah, ok then.
But no, conversation didn't occured in that moment...
Damn I thought one of them would be Tess... where is she tho?