They look fine. They just look a bit tired and that's understandable. All that Japanese food, all the sugary treats screwing with there blood sugars, all the walking and the time difference too which would screw there body clocks over. Travelling can be tiring and sometimes you can get grumpy when surrounded by people all the time. Eating an imbalanced diet for days can also affect mood. They look tired more then anything though. Probably just needed a good rest