I found this on Mtgox site (updated on 8.11.2013).
* Deposits
Bank details: Provided to verified Mt.Gox accounts on our website
Please do not send two transfers of equal amounts on the same day to us as it could result in only one deposit being credited.
* Withdrawals
Please make sure to enter YOUR address in the form, and not your bank's address. A fee of 0.5 PLN applies for each withdrawal request.
Japanese Domestic Transfer (JPY)
We've formed a new banking relationship formed with JapanNet Bank, and as a result Mt. Gox customers in Japan must make all domestic Japanese Yen (JPY) deposits to our JapanNet Bank account.
* Deposits
Additionally, all JPY deposits are credited to accounts within one hour when transferred from your bank between 9am and 3pm on banking days. Deposits made from JapanNet Bank accounts can be processed 24/7.
Processing Fee: Free, except for fees charged by your own bank
* Withdrawals
All JPY withdrawals placed before 4pm Tokyo time on banking days are now processed the following banking day, and will be sent from our JapanNet Bank account.
Processing Fee:
Withdrawals to JapanNet Bank accounts:
-52 JPY
Withdrawals to all other domestic accounts:
- 168 JPY for all amounts up to 30,000 JPY
- 262 JPY for all amounts from 30,000 JPY and above
I will send them a ticket now, if the JPY or PLN withdraws are working without delays... if they do i will find the nearest japanese/polish bank
ps. I'm from Europe, I think the thing here shouldn't be so complicated.