In small neighborhoods across Okinawa, friends “meet for a common purpose” (sometimes daily and sometimes a couple days a week) to gossip, experience life, and to share advice and even financial assistance when needed. They call these groups their moai. 

Truly interesting concept for those who had experienced a type of mastermind group experience. Like the one I had at EO chapter in Madrid or the one I am building with some peers, my moai, my foro.