Kaede's flying with purpose. He has Information and a little artefact to prove his Information is correct. This will be grand. He's flying and he's grinning and life's (reasonably) good (terms and conditions apply).
"Turns out I can drain mana from potions! Bad news is if I do it from one potion I get it from the whole batch and it's no longer functional so I accidentally made a bunch of other people's flavour enhancer stop working."
"Oh. Well, some people will have disappointing lunches and you'll have to buy in bulk going forward I guess. You didn't see that coming?"
"Not really. And I was actually planning on learning whether I could become a witch and make my own potions."
"Well, I'd have to go bother someone each time rather than doing it myself—which I guess might be worth it anyway, given how costless wizardry is."
"And you're in a wizard school so you wouldn't have to go to a pro and pay them."
"I'm thinking I could try looking at pregnancies and what-have-you to figure out when you get a CC, see if I can't replicate it."
"Well I'd ask and tell them why I was staring, naturally, just like I explained stuff to you."
"...I guess there isn't etiquette about this where you're from either, is there."
"Nope. I'm trying to go with the common sensical approach but if you have suggestions I'm all ears."
"I'm not some kind of social butterfly myself but if your modus operandi is 'stare at people who've never heard of the magic you have that means you have to do that' you might want to put out some kind of ad or go by word of mouth instead of just... staring at random people."