|Union||Japan Rugby Football Union|
Junior Japan is a national representative rugby union team of the Japan rugby union. It is a second-tier side to the Japan national rugby union team. Junior Japan competes in the World Rugby Pacific Challenge against teams such as Samoa A, Fiji Warriors, and Argentina's Pampas XV. 
The Junior Japan squad was formed in 2012 from players just outside the main Japanese national squad. In the first year, the team played a match in Tokyo against the Tongan national side, before joining the Pacific Rugby Cup in 2013. 
Matches against national teams or national 'A" teams up to and including 2014 Pacific Rugby Cup:
|15-06-2012||Junior Japan||24–45||Tonga||Chichibu, Tokyo. |
|18-03-2014||Junior Japan||13–99||Fiji Warriors||Bond University, Gold Coast|
Pacific Rugby Cup
The Japan national rugby union team, often known as the Cherry Blossoms, Sakura, and more recently The Brave Blossoms is traditionally the strongest rugby union power in Asia and has enjoyed and endured mixed results against non-Asian teams over the years. Rugby union in Japan is administered by the Japan Rugby Football Union (JRFU), which was founded in 1926. They compete annually in the Pacific Nations Cup and previously in the Asia Rugby Championship. They have also participated in every Rugby World Cup since the tournament began in 1987.
The Pacific Nations Cup is an international rugby union competition held between three Pacific states: Fiji, Samoa and Tonga. The 2019 edition of the tournament will also include the national teams of Canada, Japan and United States. First held in 2006, the tournament is intended to strengthen the Tier 2 rugby teams by providing competitive test matches in a tournament format.
The World Rugby Pacific Challenge, formerly the IRB Pacific Rugby Cup, is an annual rugby union football tournament held in Oceania since 2006. It is contested by national 'A' teams from the Asia-Pacific region. The tournament is run by World Rugby through Oceania Rugby.
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