Sugawara is a dancer known internationally and had been a back dancer for artistes such as Rihanna, SMAP and Amuro Namie. She had also taken on choreography jobs for artistes such as Girls' Generation and Koda Kumi and was previously seen in a TDK commercial with Stevie Wonder. Besides being a dancer, she also takes on modelling, CM jobs and holds dance workshops in Japan and overseas.
When asked about the news, Miura's agency did not deny it and said that they will leave it to Miura to handle this since this is his private matter. On the other hand, Sugawara is said to be in San Francisco at the moment according to her last post via Instagram on 21 September.
Sources: Nikkansports / Sanspo