NISA through PayPay

Hi everyone!
I was wondering if I can get some advice on starting investing on NISA!. Is paypay a good way to start and if I do, should I get a PayPay credit card as my first one for Japan?.
My Japanese sadly is still not good enough to understand a lot but I could use Google Translate if needed.
The end goal is to set up an investment account where I can just put some money aside whenever I can for the future.
I currently also don’t have a bank card ? I use wise for most of my transactions.
Sorry if this is a repetitive post.

by MexicanoEnJapon