Sony Bank + Rakuten NISA or SBI Shinsei + SBI NISA?

I currently only have a Yuucho account and was wondering which new bank account, Sony or SBI shinsei, I should apply for. I am 21 years old, Japanese returnee, mainly looking for high rates and ease of making NISA later on, barely use cash/atm, no need for English services. I also must create a credit card, so if you have any suggestions on what to choose I would appreciate it very much!

by OsakaMilkTea