I got some t/wst brainrot and there is one thought that hasn't left my brain since I first thought about it months ago...
It has to do with...DRUMROLL PLEASE...
So basically I was thinking that in the rare occurrence that he got sick while Y/uu was still trapped there... I feel like our all powerful prince of B/riar V/alley would trust the MC more and basically just report to them to ask about his symptoms as he doesn't want to cause L/ilia worry or alert his two knights, ESPECIALLY S/ebek as he would definitely just make a huge scene out of it.
A few flame-filled sneezes would also confirm that he's indeed sick. And I don't think they'd be huge flames, I think they'd just be itty bitty ones because he's not a damn monster.
To add to the scenario, Y/uu would bring him to the school store and buy him some cold medicine and other cold necessities. They would then sneak back into M/alleus' dorm where he'd be put to bed however, he'd fight sleep until he was convinced that Y/uu wouldn't leave his side.
After that, Y/uu would buy some soup from M/ostro L/ounge to give to him as they both know L/ilia's cooking would do more harm than good.
Now, once M/alleus fully recovered, he'd be grateful to Y/uu for taking care of him and would give that whole "I owe you my life, child of man" speech or whatever lollll.
Because I love the trope, I can see Y/uu catching M/alleus' cold once he fully recovered and the poor guy will just panic a bit before trying to recall how he was cared for and attempting to do the same. Eventually, he'd get stuck and ask his wonderful found family and possibly his human classmates for assistance while making sure L/ilia doesn't do anything cooking related.
Also, during all of that, G/rimm will be his usual whiny/lh, hungry self (lol) before eventually calming down thanks to food and the fact that his hench-human can't do much.
Anyway, I'm just rambling so I'm gonna stop before it stops making sense(not like it made sense in the first place)
If you got this far, ily :3