"We are also convinced that participating in Super Rugby will encourage greater interest in our domestic rugby and it will become a big dream and goal for those who play rugby in Japan - especially younger generations - to compete at this level."
The JRFU has also forged a relationship with the Singapore Rugby Union and Singapore Sports Hub that will see the state-of-the-art venue host three games per year, delivering Super Rugby to new Asian audiences.
Carlos Araujo, President of UAR said: "We now face a huge challenge both on the sporting and organisational fronts. Ahead of us we have six very enjoyable years, first with Rugby World Cup and then this opportunity to enjoy our teams in the Southern Hemisphere elite, playing in Super Rugby and The Rugby Championship."
Both the Japanese and Argentinean teams will play in the South African group and will be positioned in opposing conferences.
The final composition of these conferences are subject to approval by South African Rugby Union's general council.