[Izuku grits his teeth at Kacchan's initial outburst. Kacchan was bark and bite, but his bark was always much louder--distracting. Izuku couldn't let the anger distract him from the fact that they were both frustrated here. And Kacchan's bark was always loudest when he felt backed into a corner.]

Then they probably don't want us to fight whatever is out there--or they think it's impossible for us to fight it. [Put it close enough so people were fooled into thinking they had a chance, and make an example of those who tried.] Maybe our win condition isn't fighting that thing.

[He keeps his gaze off Kacchan for now, kneeling back over his notes. If he stood for too long, he felt like he would be more likely to argue back again--so instead he takes a more non-threatening pose.] What about the nature of the mist? Is it always thick, or does it fluctuate with the time of day?