>>65839082she didn't graduate, she was terminated for repeated contract violations. As for why, no one knows for sure. Panko and Airi have both stated on stream that it's better people don't know because it would make people think less of her. Lumi said she regrets not being as involved with Yuri and implied she blamed some of Yuri's new friends which sounds a lot like she was blaming discord groomers. Tenma has gloated about her getting fired multiple times. And Pippa was the only phase girl to follow her new persona, or at least she used to, because now she doesn't follow her anymore, but Runie does