Yuya Tegoshi will digitally release his new song "Flash back" on his birthday, November 11. 

"Flash back" is said to be a fast-paced number that incorporates the basics of dubstep. It was written by Chiaki Mayumura, Msk Off, and The Hills, composed by Siwoo, Sho Udagawa, Msk Off, and The Hills, and mixed/mastered by South Korean engineer MasterKey. 

Mayumura was also in charge of the lyrics for "Lover," which was included in Tegoshi's mini-album "KIZUNA" that came out in January.