Yes, Japanese and international Pokmon cards count separately because they are distinct products with different release schedules
Pay attention to their deck construction, gameplay strategies, and handling of different situations
For example, if you control Muldrotha, the Gravetide ("During each of your turns, you may play a land and cast a permanent spell of each permanent type from your graveyard") and you cast a creature spell from your graveyard during your second main phase, you won't be able to cast another creature spell from your graveyard with Muldrotha's permission until after your next ending phase ends
Bunnelby (Fantastical Parade) is not available in Regular Packs
I don't see any reason not to include it
Fans are still waiting to get their hands on the Promo 10 card, and weve got the info about what itll be and its stats below