His best known works are voicing Shinnosuke's father Hiroshi Nohara in the long-running anime series Crayon Shin-chan, Maes Hughes in Fullmetal Alchemist, Holland Novak in Eureka Seven, Axel in Kingdom Hearts, Leorio in Hunter × Hunter, Shiro Fujimoto in Blue Exorcist, Shingo Shoji in Initial D, Zenzo Hattori in Gintama, and Esidisi in JoJo's Bizarre Adventure: Battle Tendency.

[3] Fujiwara founded his own talent management and production company, Air Agency, in 2006.

The first TV anime in which he appeared as a regular was Yokoyama Mitsuteru Sangokushi, but his breakout role was Hiroshi Nohara in Crayon Shin-chan.

[9] In August 2016, Fujiwara was diagnosed with an unspecified illness, even though he continued to work for Air Agency and various dubbing for long as he was able to undergo medical treatment.

[11] Fujiwara died at the Tokyo Medical Hospital from cancer on April 12, 2020, aged 55 years old.