Posting at 8am I was on one track and didn't consider other answers regarding sad art, so it's just occurred to me to say that blandly happy art of him isn't entirely him. Knowing that a lot of those smiles are a front, and that the unguarded him is a bit softer and sadder, I do want that. It's just that given the wrong context it's upsetting to see. I think if people understood that it's infrequent and special it might be better placed, but I end up feeling like I'm being overly finicky about it. The art that attempts it tends to be too extreme angst or someone who went too droop on his eyes in a happy scene. There are some pictures I couldn't face in the past because they made him look sad, that I now look at and think that's unknowingly fitting for the situation, and gave it my own context and meaning that reflected him. I'm glad that in time I have that to replace the initial feeling that I missed out on something. There's this kneejerk reaction to protect him from harm, and this craving for things I see other characters get but not him, and they both make me react badly over something so small. Am I his mum or his spouse? Damn.
I wrote some blogging shit to go on front of this but it was 2000 chars in itself so question answering I go.>>3276421
I've always had a particular sense of Kaito's character so I definitely feel there's more than just ice cream that could be considered canon; don't discredit your feelings over that one word. His smile and his voice alone say a lot about him.>>3276568
Seeing others safe and well is probably what he hangs on for, but since he doesn't put much stock in his own actions he'd answer cake.
It's never elaborated on how he was trained or taught, and he's the kind of person who'll suddenly seem to know what he's doing out of nowhere. He's an active doing person, but scared of acting with his powers, so I do like the fan interpretation that his senses let him observe better or imagine processes he's read about.