When signing up for pixiv Premium, your payment currency (JPY or USD) is automatically determined based on your access location (e.g., your IP address).
If accessing from within Japan: Japanese Yen (JPY)
If accessing from outside Japan: US Dollars (USD)
If you're in Japan but still see prices in USD, try switching to a different internet connection (e.g., switching from Wi-Fi to mobile data) and access the page again.
If that doesn't solve the issue, your internet service provider may be assigning you an overseas IP address.
In that case, please contact your provider and ask whether your IP address is set to a location outside Japan.
Please note that we cannot manually change your payment currency.