The current rules in Japan with respect to liquids only apply to flights bound for liquid-restricted countries like the US. And those rules are the familiar limitations of 100mL per container with everything fitting inside one 1-liter baggie. I have flown from NRT to the US twice since last November (including a trip last week) and declared my baggie at the security check at the gate and was allowed to take my liquids.

But Japan will soon adopt these idiotic restrictions for all international departures. (Good thing the terrorists would never think to attack flights bound for Japan. )