I'm thinking any Japanese Army forces don't leave for Europe or the Middle East until Japan is finished with the German colonies in Asia and the Pacific. Mesopotamia seems like a good place to start with, being a good deal closer to Japan than France. Gallipoli might see older Japanese warships along the French and British. If the Japanese army also goes to Gallipoli.
The Japanese didn't declare war until 23rd of August for starters and wouldn't be conducting a mobilisation-deployment like the British which will slow any thoughts of participation in Europe. Tsingtao didn't fall until November , which will also drive the decision to go to Europe, or elsewhere.