Remember, when Disney first tried to capitalize on Kingdom Hearts nearly 10 years ago it didn't work out too perfectly for them. Now that Disney is more okay with KH, they are making more stuff thankfully
and yes, I want more official KH pins too lol
Actually from what I research (which is a lot lol), Disney makes less KH merchandise in Japan than SE. In terms of official merchandise, I know the TOMY Magical Collections figures are released in Japan by Disney but that's about it
In terms of official Disney pins (like those traded on this site), the ones listed on Pinpics are the only official ones out. Except there is this mysterious pin:
Which I can't find anything about. I doesn't look as quality as the other official merchandise, but it is kind of nice, it was on Ebay a few years ago but was never interested in it considering it's more of a brooch than a pin ^_^