yes
No, a Japanese PSN account can only be funded with a Japanese PSN card, one with a yen amount on it.
no, your online rank will only be deleted if you delete your xbox live/psn account.
isniipez_v2 we will take it in turns, but i let you kill me on my other account L4D_II_JoK3r
by PSN you need a account to PSN
No you can't, PSN cards are country and currency locked. You cannot redeem German PSN topup cards on a UK PSN account.
To access the Japanese PSN, you need to register an account on PC, on the Japanese PSN site, and connect to the PSN on the PSP with that account.
Your PSN account profile should work across any Sony device that uses PSN.
The password is whatever you set it as when you registered your PSN account.
You can't. When it is deleted it is deleted forever.
You only need a PSN account not a new one
System activation is where you log onto your PSN account on a PC, and register your devices (PS3, PSP, PSVita). Only systems you have activated in this way can log into your PSN account and use your PSN data.