Freelancing and getting payments from outside Japan

Hi everyone,
This question might have been asked before, but I really need some clear guidance.

I recently moved to Japan for a 2-year language program. Back in Bangladesh, I was freelancing on Upwork and Fiverr, receiving payments through Payoneer, which I then transferred to my Bangladeshi bank account.

Now I’m preparing to restart freelancing here in Japan, and I’m wondering:
1. Can I connect my Japanese bank account to Payoneer, Upwork, Fiverr, and PayPal to receive payments directly in Japan?

1. I just opened a PayPal account as well—can I use it with my Japanese bank account to accept international payments?

2. Since immigration allows me to work 28 hours per week, how does freelancing/payment through these platforms usually work under that rule?

I’d really appreciate if someone could explain the process or share their experience. 🙏