Actually it is not the sim card but the phone. You have to check what band GSM Tokyo uses. Then make sure the phone has that band.
If the phone will work on Tokyo GSM band, then you can purchase a sim card in tokyo. Or use your philipine sim card(but you'll pay for roaming).
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.