"I agree with Otis; you'd be a liability if you were to fight in your condition."
There wasn't any trace of sympathy or empathy for Davil's situation. A cold, hard truth that Davil would have to adjust to when talking to someone like Chunji. From Chunji's perspective, David wouldn't do anyone any favors. Not only was he injured, but Davil was possibly the weakest person in the classroom. He would be on par with Chloe if Chloe didn't have the grace of being gifted with a powerful Ethos. An Ethos that Davil currently lacked in both power and usability. What did he even use his Ethos on before class?
Chunji glanced towards the treeline and pointed out the archer was readying another arrow to shoot. "The mannequin's right there, around thirty degrees right and thirty feet on the tree from Ms. Nachtnebel." With that directive, it was time to 'analyze' Professor Alto. The vagueness of the command made it confusing for Chunji to infer. What did Otis want him to analyze? His strength? It was obvious that Alto was stronger and built more strongly than Rio.
A quick look at Chunji's Ethos told him the obvious. "Your body's healthy, Professor Alto," Chunji said as he looked over his professor. As expected, he was built, had scars, and his hands had callouses.
Chunji had no intention of challenging Alto at all. It was clear what the outcome was, even if Chunji gave it his all to fight Alto. With no further instruction from Otis, Chunji decided now was the best time to ask questions. "Professor Alto, what are the weaknesses of Personal Barrier? I'm sure that many people worldwide have devised methods to best bypass a standard barrier." Other than attacking the barrier until it broke, there were hundreds of thousands of people in the world; there had to be some to create ways to break down a Personal Barrier.
If it were Chunji, he'd expect that a curse or an emotional turbulence would bypass or weaken a Personal Barrier. Curses, in general, were hard to avoid. Curses came in all different kinds of forms, whether they were esoteric or exoteric. Someone would have needed to prepare a countermeasure to redirect the curse or purify it once it landed on them. Chunji didn't know the exact limitations of the Personal Barrier and whether or not it could block the curse from entering the body.
As for emotional turbulence, Personal Barriers were fueled by emotional essence or Nama. If the emotional essence were unstable, Chunji assumed that the same would go with the Personal Barrier. Barriers, in general, were meant to be 'stable' and 'protective' against threats that would bring destruction to life. If the barriers were fed fluctuating essence, the Personal Barriers would correlate to a weaker barrier if Chunji's conjecture was correct.
However, this adds more to the question of Personal Barriers. Can magic involved with healing bypass the barrier? Can the user personally select what is considered an 'attack?'