After departure from the agency in 2023, he has become freelancer musician under independent company Floodlight.
For artists as Zard, Mai Kuraki, B'z[2] and many others from Being Inc. Tokunaga provided for them music and arrangements, participate in the live support for more than 15 years.
Beside of this he's doing programming, is in charge of piano, organ, guitar, mandolin and percussion.
[3] He is also famous for composing the music to the anime Dragon Ball GT (1996–1997).
In 2023, Tokunaga and doa's members have announced departure from the label Giza Studio and from September and became freelancers under Floodlight company, the announcement was made on their official website.