He’d attempt to do better. Ha, funny. Too bad “I’ll try,” coming from someone as insufferable as Karkat’s cousin, meant “I’ll pretend to try but frankly I think I’m perfect just how I am.” Seriously, Karkat wasn’t holding out hope for Kankri respecting him. Would he do his best to respect Kankri, though? Yes, he’d try to be civil, because Karkat actually had some damn social skills.
Karkat rolled his eyes at the suggested exception to leaving him be after class. No fucking duh, Kankri. The Latino had just promised he’d do his part to minimize the unpleasantness of the situation he’d been dumped into, else he would’ve said that particular thought out loud.
And then, at long last, something came out of Kankri’s mouth that was actually useful. His cousin was right; yes, when the attack was minor, Karkat had no trouble getting his inhaler out and self-administering, but the bad ones that had him dropping to his knees required outside help. The chance of Kankri being around when that happened was pretty low, considering that he was going to avoid him as much as possible, but Kankri might as well know.
"Yeah," Karkat replied to Kankri’s repeated offer to help him unpack, "I’m sure. I genuinely don’t feel comfortable with people touching my things. There’s not that much stuff to put away, anyway." That being said, Karkat had been moving around pretty aggressively when he was still pissed at Kankri. It was time for a break, and it was also a perfect time for showing Kankri how to administer his medication. Karkat was feeling short enough on breath to warrant it.
Karkat climbed onto his bed and leaned back against the wall, closing his eyes and taking a few breaths just to confirm that yes, it should be easier than that, before reaching into his backpack for his inhaler.
"Okay," he began, "administering my medication. This shit’s pretty simple, since it was designed to be possible for someone struggling for air to do." Karkat shook the canister a little. "Shake it up a bit first to get the meds mixed up properly. Then it’s cap off, in mouth, press down on the canister twice…" The last step was a bit unintelligible since the one before had Karkat actually sticking the inhaler in his mouth, but Karkat trusted Kankri would get it when he demonstrated. Two puffs as he took a deep breath, then he lowered the inhaler and replaced the cap. "…and I’ll know I need to breathe in when you do that. I’ve had asthma for years, the procedure is nothing new to me."
Karkat got up and set his inhaler on his desk, then stuffed his hands in his pockets and looked over at Kankri. “That easy enough for you? Yours involves injecting stuff into a vein, doesn’t it? I think I remember that from the time you got a spontaneous nosebleed.”