[2] He formerly belonged to Yamaha Music Foundation and Three Star Pro (both during the Checkers era), and now he is part of a private agency, FFM Co. Fujii was born as the first child to a father who was a Japanese National Railways employee and a mother who was a beautician.

When he was a junior high school student, he encountered the Japanese rock band CAROL and started playing music.

In 1992, The Checkers disbanded, and the following year, 1993, Fujii changed the spelling of his first name from kanji to katakana, and started his solo career.

It is an interactive art video game where the player manipulates the surreal visuals of items like a kaleidoscope with the controller while equally psychedelic music plays in the background.

Players can also insert CDs after removing the game disc to listen to music during the simulation in a manner similar to Vib-Ribbon.

[6] In addition to singing, he has held solo exhibitions under the name "FUMIYART"[7] and produced the Nagoya City Pavilion "Tower of the Earth" for Expo 2005 (recognized by the Guinness Book of Records as the world's largest kaleidoscope).

His songwriting credits include "Shiroi Kumo no Youni" (composed by Naoyuki Fujii) for the band Saruganseki and "Hoshizora no Katasumi de" (lyrics and composition) for Misia.