English-speaking finance professionals
Financial Planners
Local Financial Planners may speak some english, some of them are foreigners.
Beware some self-named FP target foreigners without having proper qualifications. THere are a number of scandals liking such practices. In general such people try to sell high fee and complicated products.
It is recommended to take a look at investment basics to educate yourself on the basics, and how you can yourself easily invest in passive, diversified funds that will return the market average (that very few product beat in a consistent manner)
You can get a free session with an independent FP here: https://www.jafp.or.jp/eng/
u/u/sendaiben, founder of RetireJapan, wrote about his experience meeting two of them here: https://www.retirejapan.com/blog/talking-to-a-financial-planner-in-japan/
Accountants
While often asked, there is no specific recommendations toward any particular professional, or any name that comes back.
2023-01 Professional Recommendation - A bit overwhelmed
2022-11 English-speaking personal tax accountant recommendations