During and after winning numerous prizes, including the 1^st prize at the 12^th Japan classical music competition and the 3^rd prize at the 53^rd ARD International music competition, Akasaka has performed as a soloist and chamber musician worldwide.

In chamber music her artistic partners included Mstislav Rostropovich, Daniel Hope, Gidon Kremer, Philippe Jarousky, Mischa Maisky, Patricia Kopatcinskaja, Ebéne Quartet, Jerusalem Quartet and Kuss Quartet, with whom she performed at international music festivals such as Salzburger Festspiele, Kammermusikfest Lockenhaus, Bad-Kissingen Sommer, Festspiele Mecklenburg-Vorpommern, BBC Proms, Saito Kinen Festival, Festival Pablo Casals, Luzern Festival, Verbier Festival, Kronberg Festival, Rio de Janeiro Festival, San Francisco Musical Days, Schubertiade and others.

Tomoko Akasaka studied with Nobuko Imai at the The Genève Conservatory of Music, where she then worked alongside her professor as an assistant. In addition, Tomoko Akasaka was also a guest professor at the Neuchâtel Conservatory. Since 2019, she holds the position of professor of viola at the Münster Musikhochschule.