I don't think it's racist to say that you had trouble telling a few cast members apart -- I think talent in Japan has just gotten that more generic, much like Hollywood. I think Hajime looks an awful lot like Battle Royale's Nanahara, who reminded me a lot of GoGoFive's Shou, who reminded me of Flashman's Dai...so, either the Japanese are cloning some of the people they like, or talent has just gotten more generic. Or...both!
And, is it just me, or did the guy who played the young useless detective in Faiz look JUST LIKE Satoshi Matsuda? And I always thought it was dumb of Toei to cast the dude who played Kuwaga in Hurricanger and Shinji in Ryuki during the same year's shows, because they're pretty damn similar looking...