Magecrafter
Well while I do blame Rey and feel like he should indeed blame himself, I don't think his classmates should blame him. I mean Adonis hides the fact he's a regressor, Justin is a traitor, Belle is crazy, and the others aren't even close to him. Really only Alicia has the right to blame him I feel from both the results of their feelings and because she shared a deep trauma/secret(?) of hers based on their trust in each other. One Rey didn't share back.