Never heard that. When did that happen?
April 2022.
Ukraine put out a video bashing fascist dictators that were involved in war crimes (basically a side swipe against the the Russians as the heirs of Hitler and Mussolini).
They they apologised to Japan for including Hirohito and deleted him from a re-release.
I'd say Japan would have given Ukraine a little less aid over the last year.
That said this really current politics and not open for discussion on this forum.