The feeling that Mandy felt was a mixture of two emotions: Anger and surprise.
When the guy popped up, she was startled by his form, it was towering over her. The man behind her saw him as well, his years of working as an attorney taught him that there would be attackers, so he taught himself sword skills.
Even though he did that, he didn't summon his sword. The man was in the middle of a school, the area they were in was enclosed, however the area was a top-notch school with the best sword-users, to just march in was insane.
When Eader was in the corner with Jian, he ran fast out of the area, turning into the abomination of a scene.
'Crap, is he doing this?'
He turned to Mythra, who was still constricted. The big man smiled. Mandy, the lawyer, Jian, and a few high-level sword-users felt his power. All were sweating from the vast amount, it was as if you were getting crushed, the further away you are the better, the stronger you are the less you get crushed.