After he released hit songs such as "Yume o Shinjite" (the first ending theme of the anime series Dragon Quest) and "Kowarekake no Radio" in 1990, his single "Wednesday Moon" reached No.
Tokunaga is the first male artist to have at least one album to reach the number-one position on the Japanese Oricon weekly charts for four decades (1980s, 1990s, 2000s and 2010s).
[1] Tokunaga also composed other singers' songs such as KinKi Kids' "Eien Ni" (from their 2007 album Phi).
[2] The program produced many Japanese stars such as Momoe Yamaguchi, Pink Lady and Akina Nakamori.
"Last Excuse") from Tokunaga's 1989 album Realize became well-known in the Philippines, when it was covered by Ted Ito as "Ikaw Pa Rin", Keempee de Leon as "My One and Only", Maso as "Kailanman", and as an instrumental by saxophonist Jake Concepcion.
[4] Tokunaga began to release the Vocalist album series, in which he covered many Japanese songs of female singers.
[8] On November 1, 2007, Tokunaga also covered Noriko Awaya's "Wakare no Blues" at the Tokyo International Forum as a part of Ryoichi Hattori's 100th Anniversary Concert.
[10] Tokunaga released the single "Toki no Nagare ni Mi wo Makase" on March 31, 2010.
[11] On July 15, Tokunaga was forced to postpone several dates on his 30th anniversary concert tour when he was diagnosed with acute laryngo pharyngitis after experiencing a sore throat following a show in Kobe.
He was diagnosed with a light stroke caused by dehydration and was confined for a week, resulting in the postponement of four concerts in his schedule.