Need help moving to Japan please.

I've wholeheartedly, after many years of deciding, to live in Japan.

I'm a single male, US citizen, living in the US.

My number one choice is Kamakura and consider Zushi as plan b.

I'm planning on purchasing a house, sooner than later due to rising prices.

I can temporarily visit on a visa until I can qualify for residency. (I am ready to jump through any hoops I may face)

What are things I should look out for and can you recommend a reputable real estate company?

Thanks in advance.

EDIT: I do not plan on working.