>yr email adress was deleted by Apple.
This is a user community discussion boards, which is open to anyone, so that posting of personal information is prohibited. The person who answers here is just a user of Apple products like you, and none of the official support staff replies here.
>I cannot use japan game to buy someself i am from Hong Kong
The contents of the App Store and iTunes Store varies from country to country, in order to deal with differences in laws and business customs of each country. Depending on the country, you may restrict access to overseas sites to tighten the rules (I don't know if Hong Kong (China) is doing that).
In addition, you need an Apple ID tied to a Japanese credit card (which proves to a resident of Japan) to purchase from Japanese App/iTunes Store.