http://www.jal.co.jp/yokosojapan/online/ar/
Now you can book your Oneworld Yokoso ticket online. All you need to provide is your international flights info and e-ticket numbers. It's pretty simple!
There are some new requirements on the new Yokoso page.
1. Residence must be outside Japan - refer to below *.
...
5. International ticket must be presented at the time of check-in.
* Residence outside Japan - Passenger must show an official ID with his/her local address outside of Japan at the time of check-in.
Customers that do not meet these eligibility rules may be asked to purchase a new ticket when checking-in at the airport.
Not sure how strictly they are enforcing the ID with foreign address check. E.g. HKID doesn't have the address printed on it.