What Business entity would be advantageous for occasional trader ?

All the heavy hitter note traders are here.

And just FYI - last summer when much of the hospitality industry was gasping for air, I was running at 87-92% occupancy at my new guesthouse, with one guest comparing my hospitality to "kintsuji", the Japanese art form of mending broken pottery with gold.  

If I understand your question, you're looking for an English-speaking Japanese "CPA" so that you can understand options for your Japanese/non-American friends, is that correct? 

I have ten thousand reasons I would do this over the stock market (and I am an Investor Relations analyst by day, my hubs is a trader on his off days, we are both in O&G and KILLING ourselves to move everything into RE as quickly as possible.) 

No guarantee that rates follow those projections but if I was able to predict rates more accurately that the yield curve, I’d be a bond trader.

If it was me I would set up a Japanese wedding company !! 

As well as get familiar with hard money lending and local bank portfolio lenders.I would join the Seattle REIA immediately and start networking and looking for any opportunities.I would immerse myself in all things REI and pick an initial niche, where you are right now I would definitely recommend that you start with Flipping starter homes since theres a huge need and market for that product at that time and it has the least risk and will also help you start building your capital at a similar rate to crypto investing because if your returns can't beat being a crypto day trader then it's pointless to even do REI for you at this time.

If I coach up my younger self in a market like this I would try to hand me the lesson I'm starting to learn at 35 . . . be a trader not a rental property investor.  

. - When we speak tomorrow, remind me to give you contact for a Japanese real estate attorney I know who's in Tokyo but from Aomori.