You know, Kayneth is unironically one of the most human non protagonist mages, his literal worst crime was being kinda an ass to Waver for something that was a fact (even if it did have some shadows of elitism), he was a dedicated husband, a good teacher, and a decent human overall compared to most other mages.
This is literally the overwhelming sentiment whenever japanese fans talk about him in current year and it's very sweet to me. Makes up for the majority of western fans being behind the curve. Or they say stuff like "wow! he actually took the time to read Waver's incredibly long bullshit thesis! what a nice guy and proper teacher!"
on that note, man, og waver was a funny psycho. "If Kayneth had the talent to be a lecturer, it should have been impossible for him to not understand Waver's talent. No, he was probably jealous precisely because he understands. He was probably afraid of Waver's hidden talent, becoming jealous of him, treating Waver as a threat to his own position." is a hysterical thing to think.
Originally Posted by asterism42
Liquid mercury evaporates, that's why it's so dangerous
I was on the Elements page of the wiki yesterday and I saw something I've never seen mentioned somewhere relevant, like his actual wiki page, but apparently Kayneth can make poisonous gas harmless via using his wind/water affinity? Well, supposedly according to Fate/Zero Anime Visual Guide I - Commentary:#7, p.130, anyway.