Born in Tokyo. She began studying the violin at the age of four. Entered the Tokyo National University of Fine Arts and Music after completing studies at the high school attached to that university.
In 1989, while studying at the university, Tomoko participated in the Aspen Music Festival on a scholarship. The same year, she received fifth prize at the 36th Paganini International Violin Concours.
In 1990, she was invited to the Anchorage Music Festival as a member of the Tokyo Chamber Soloists, and was awarded an honorary diploma from the Chigiana Music Academy in Siena, Italy, following her participation in that school's chamber music summer course.
In 1991, Tomoko graduated from Tokyo National University of Fine Arts and Music at the top of her class. She took first prize at the 5th Spohr International Violin Concours. Appeared on the NHK FM radio "Saturday Recital" program.
She toured Japan as soloist with the Barcelona City Orchestra, the St. Petersburg Symphony, and the Moscow Philharmonie, for all of which she received high praise. Also in April 1999, she was invited to participate in the subscription concert of the St. Petersburg Symphony, and enjoyed great success and praise. In 2001, she participated with great success in readings from Osamu Dazai' s "Ningen Shikkaku" with Reo Morimoto, under the title of "Concert of Words,” using unaccompanied violin works by Ysaye and Bach as accompaniment. In 2002, she celebrated the 10th anniversary of her debut, with concerts of all the six solo sonatas of Ysaye in Sapporo and at Tokyo' s Toppan Hall. She received particularly high praise for the intensity of her concentration and interpretation, which resulted in her being awarded the 33rd Exxon-Mobil Music Award (Western classical music promotion division) in 2003.
In April 2003, she released a CD from Tri-M, titled "La Violina del Teatro (The Violinist of the Opera House)" with Hideki Nagano on the piano. In September and October 2003, she was dispatched by the Japan Foundation to give recitals in Turkey and Egypt.
In February 2004, she appeared on the "Meikyoku Recital" NHK FM radio program, and the studio audience was fascinated by her wonderful performance and untrammeled, natural style of presentation.
Aside from her activities as guest soloist, she is also actively involved in chamber music as a member of the Tomo Quartet and the Japan Chamber Orchestra. And she has given joint concerts with such musicians as Shin-ichiro Nakano (cembalo), Tatsuzo Akasaka (clarinet), and Joji Hattori (violin), and so on. Tomoko is invited to the Miyazaki International Music Festival every year.
As Tomoko’s sound continues to mature, she attracts increasing attention in a broad range of fields.
To date, she has studied under Takeshi Kobayashi, Kazuki Sawa, Chikashi Tanaka, Koichiro Harada and Masafumi Hori.