You can use paypal for a japanese psn. Go to paypal create a japanese account. Have you actually done this? You can attach the PayPal but it wont work without a credit card attached with a verified JP address.
Note that you need to make a JP PSN account to access JP Store. On top of that, you can only purchase games on the JP Store by inserting JP PSN cards in “¥”. Japanese games aren't region locked (A select few are, so be careful) so this means that you will be able to play them on any console worldwide.
OffGamers is definitely a legit and reliable source for gift cards and in fact one of the best options around in the industry.
Play on your US accountFirst, log into your PS4 with your Japanese account. Download the games you're interested in playing, and then head to the PS4's settings tab. Scroll down to the “PlayStation Network/Account Management” section, and button through. Your US account can play Japanese games, and vice versa.
Download your games to your PS4 on your Japanese profile and then sign in on your English profile. Boom! The games that were only available on the Japanese PlayStation Network are now downloaded to your PlayStation and available for you to play through your normal account.
To set the languages you'll use for text input, select (Settings) > [Language] > [Input Languages].
Scroll to the PlayStation Network tag and choose “Sign up for PlayStation Network”. When presented with the choice choose “Create a New Account (New Users). When presented with the choice choose Japan as your country of residence. This will change all user interface text into Japanese.
Your new online ID must comply with our Terms of Service, including the Community Code of Conduct. Each online ID must contain between three to 16 characters and can include a series of letters, numbers, hyphens (-) and underscores (_).
No spaces, underscores are ok.
I created a Japanese account just for that. It is not illegal as in "you will be persecuted". However it is against the Terms of service of the Playstation network.
If possible, please use a payment card registered to the same region as your PlayStation Store region. If you are unable to use a card from the same country as your PlayStation Store region, you can make purchases on PlayStation Store using an alternative payment method or a PlayStation Store Wallet Top-Up code.
Basically, you just have to register your Credit Card as your prefered payment method. Log into your US PSN account from a computer. Select Payment Management from your account and add your credit card using an US address.
Quick steps to change your PSN account region:Download and install the app on your device. Connect to a VPN server in your chosen region. Create a new PSN account and select the region you want during the setup process. Turn on the PlayStation Store – your PSN account is now in a different region!
How can I change my PSN region on PS4?
- Create a new PSN account. Head over to the Sony Entertainment website. Click the Start button.
- Configure your PSN account. Go to the PSN website. Log into your account.
- Use a VPN. You can use a VPN to change your geo-location and access the PlayStation 4 Store from another country.