>>280200706
>Does Kazuya even have any talents?
Yes, actually, playing with toys, granted it's just about him being good with kids, which may or may not be just a coded way to say he still is just like a kid himself.
>good academic records
Not that we ever saw anything from him in these regard, he is able to cram material so he can write a test for someone else, though , so maybe(?)
>or management skills or something?
He made the movie happen and that's not an easy thing to accomplish, we don't really know how much he got from Mini outside the crowdfunding.

That being said his actual strength is supposed to be hime being a hard worker, but it might as well just be him being stubborn.