If you are a farmer in Japan, and would like to become a WWOOF Japan Host,

please read the menu item "ホスト（受入先）になろう" in Japanese.  It explains what to do. 
A condition of becoming a WWOOF Host in Japan is that at least one person at the Host's place must speak and read Japanese fluently.  

Live organically!

Good WWOOFing!
The WWOOF Japan team.
Grass roots movement for organic food, sustainable lifestyles, and social justice.