OFFICIAL MANAGEMENT INFORMATION
Here are some official links to places you can find information and news about Tatsuya (most are in Japanese):
This twitter account is updated by Tatsuya's staff and includes up-to-date photos and information about Tatsuya's schedule. I often post translations of these tweets on the @rdtf twitter account.
This is Tatsuya's management company's official website for him.
Dragon Arrows: www.tatsuyafujiwara.jp
Dragon Arrows is the name of Tatsuya's official fanclub (run by Horipro). Currently, I think you can only join if you live in Japan, but please let me know if you know how to join from outside!!