It may not be Japan, check this Quarterly from Argosy (ASX AGY) where they specifically state a meeting that "involved a recent meeting in Tokyo with key executive of this group". Meaning, AM was in Japan, but may have been there on AGY business.
It might also be a Japanese deal, I'm not saying it isn't.
Just saying that there is public/documented reasons for AM to be in Tokyo which doesn't involve G1A.