is a Japanese lyricist born 11 December 1957 in Gifu Prefecture, Japan, though he considers Tokyo to be his hometown. Beginning with participation in the Yamaha Popular Song Contests, he made his debut writing the lyrics for the 1981 Chage and Aska album .
Matsui then began writing lyrics for groups such as Anzen Chitai, Kyosuke Himuro, and others, becoming one of the more popular lyricists for a variety of rock bands. He has now written the lyrics for over 2000 songs. Since the late 1980s, most of the lyrics for the music released by Anzen Chitai has been written by Matsui.
As of today, Matsui is under the management of Avex Group, Japan's biggest independent record label. He serves as a resident songwriter for the said company.
Matsui's works include the following: