Hello Ryan and thanks for your comment.
I’ve read your self introduction, you were a realtor!Wonderful!
I am a RE/MAX agent and I’d like to help you to learn about the industory.
For now, I’d recommend you Nikkei report for the market data.
https://nrm.nikkei.co.jp/
Also Nomukomu report for the investment market.
https://www.nomu.com/english/report/
There are more reports, but many of them are written in Japanese and these two are good.
I’d also like to recommend that you read a blog below, written by my friend Lily, who is also a RE/MAX agent (in Osaka).
In her blog, she explains a simple but very good way for people from overseas to buy a property in Japan.
Buying Property in Japan as an Overseas Buyer: A Comprehensive Guide
Buying Property in Japan as an Overseas Buyer: A Guide to Remote Contract Signing and Closing
About sellimg, perhaps the link below will help you.
https://www.realestate-tokyo.com/sell/selling-guide-1/
I hope it helps!