Russia and Japan are going to lose, they're both unable to take on the entire Western world at this point, definitely far to early for Japan to even attempt it. Russia will probably lose Poland and Armenia, and those nations being independent will cause problems for Austria, Prussia and the Ottomans. Poland for Austria and Prussia, both have land that was formally Polish and nationalism is on the rise right now. Same problem with an independent Armenia for the Ottomans, even if they have good relations with the armenians in their territory.
Not sure what Japan will lose, maybe Okinawa to the British as a treaty port, that's about all I can think of, they don't really have anything of worth to nick so conquering them would be rather pointless.