Born in Nishinomiya, Japan, Seira has been dancing since the age of four. She has trained in Russian Vaganova ballet, Cecchetti ballet, jazz, tap dance, modern ballet and Japanese dance.

Seira has performed and received awards at numerous international competitions including the YAGP New York City Finals, Kobe World Dance Competition, Japan Grand Prix, and the Dance World Cup. Seira began as a teaching in 2008 at the Sawako Murase Ballet studio. In 2013 Seira graduated from the four-year degree program of the Osaka Performing Arts University. Over the years, Seira enhanced her knowledge and developed highly advanced teaching skills through class practicums at the Royal Winnipeg Ballet School three-year Professional Teacher Training Program and she graduated in 2016. She holds her Associates qualifications in Cecchetti.