Japan America Society of Southern California
Building Japan-America Relationships Since 1909
JAS Ambassadors Circle

In December 2010, the JAS Board of Directors adopted a charter to create an  AMBASSADORS CIRCLE. The Ambassadors Circle  is a growing committee of "Special Ambassadors" established in accordance to the JAS Bylaws to promote the mission and goodwill of JAS, particularly in the fields of entertainment, arts, fashion, and popular media and culture.


We are pleased to announce Shin Koyamada was appointed JAS Special Ambassador at the meeting of the Board of Directors on May 17, 2012.

Shin Koyamada – Brief Biography

Shin Koyamada became best known to audiences after his co-starring roles in the Warner Bros. blockbuster Tom Cruise film “The Last Samurai” (2003) as Nobutada and starring role in the Disney Channel hit feature movie franchise “Wendy Wu: Homecoming Warrior” (2006) (TV) as Shen.

Koyamada holds Third Degree Black Belt in Karate and competed in National Championships in  Japan , Second Degree Black Belt in Tae Kwon Do, First Degree Black Belt in Kung Jung Mu Sul and US Nation Championship Gold Medals in Shaolin Kung Fu, including traditional Chinese 18 classical weapons.  Other martial arts systems and styles he has trained include; Kyudo (Japanese archery), Kendo (modern Japanese swordsmanship), Iaido (traditional Japanese swordsmanship), Yabusame (archery while riding a horse) and Aikido.  


Koyamada’s independent entertainment company, Shinca Corporation, produced the movie “Good Soil” (2007) and a television talk show "The Nia Lyte Show" (2010).  Koyamada also founded The Shin Koyamada Foundation (SKF), a  U.S.  nonprofit organization dedicated to help children succeed in martial arts programs.  In 2011, SKF raised over $120,000 for victims of the Great East Japan Earthquake and Tsunami. It also sent shipping containers filled with basic necessities including food, clothes, toys, shoes, water, blankets letters of support.  Koyamada serves as a goodwill ambassador for his hometown,  Okayama Prefecture , Japan .  In March 2012, he toured five cities in  Japan  with the Embassy of the U.S. Tokyo to inspire Japanese students to study in the  United States  and experience American culture.

We are pleased to announce Adam Yamaguchi was appointed JAS Special Ambassador at the meeting of the Board of Directors on October 25, 2012.

Adam Yamaguchi - Brief Biography

Adam Yamaguchi is the executive producer and a correspondent for Current TV’s no-limits documentary series, “Vanguard.” 

While with Current TV, Adam has reported on some of the most important issues affecting the world today, with investigations that have taken him around the world. Adam’s reports include the rise of robotics in Japan, the decline of a manufacturing empire in Saipan, the incredible rise of modern China and Pakistan’s ongoing attempts to deal with terrorists in the nation’s lawless border regions. Adam has reported extensively on the environment, from atop Alaska’s glaciers, to Bangladesh, China, Madagascar and in Greenland. 

In 2010, he embedded with an elite anti-drug task force in California and tracked the growing business done by Mexican drug trafficking organizations in California and the U.S. 

Prior to his work with “Vanguard,” Adam worked at Fox Sports, CNN and TV Asahi Japan, where he covered major national and international news including the 2000 Presidential election, the September 11th attacks and the war in Iraq. Adam began his journalism career at the University of California, Los Angeles, where he served as the editor-in-chief of “The Daily Bruin.”

We are pleased to announce Takuma Sato was appointed JAS Special Ambassador at the meeting of the Board of Directors on October 30, 2013.

Photo Credits: Jun Nagata, Rafu Shimpo

Takuma Sato - Brief Biography

Takuma Sato, a world-class race car driver from Tokyo, currently competes in the IndyCar Series racing for A.J. Foyt Enterprises and previously participated in Formula One. In April 2013, the 36-year-old driver became the first Japanese competitor in history to win an IndyCar Series when he captured the checkered flag at the Toyota Grand Prix of Long Beach. 

Sato, who seriously competed in bicycle racing as a teenager, began his professional motor racing career after winning a scholarship from Suzuka Racing School in 1987, and was crowned the igneous British Formula 3 championship and won multiple international F3 races before advancing to Formula One. He secured his first full-time ride in 2002, achieved a third-place podium at the 2004 U.S. Grand Prix and finished eighth in point standings. 

In 2010, he moved to the U.S. and joined the ultra-competitive IndyCar Series. 

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1411 W. 190th Street, Suite 380, Gardena, CA 90248
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