Nakashima Mika will release a double A-side single titled "SYMPHONIA / Shiritai Koto, Shiritakunai Koto" on October 27.

As previously reported, "SYMPHONIA" is the theme song for the mobile app game 'takt op. Unmei wa Shin Akaki Senritsu no Machi wo' which will be released by the end of the year. Provided by singer-songwriter rionos, it's described as a song with a dramatic and beautiful melody and spectacular sounds. 

Meanwhile, "Shiritai Koto, Shiritakunai Koto" is the insert song for TV Asahi's drama 'Hyouchakusha.' For this song, Nakashima teamed up with Akimoto Yasushi for the first time in 20 years. He who wrote her debut single "STARS" in 2001 as well as "WILL" in 2002. 

The single will be available in both limited and regular editions. More details will be revealed at a later date.