Toaru Kagaku no Railgun is the follow-up series to 2008/2009's Toaru Majutsu no Index. The story focuses on Misaka Mikoto, or "railgun", and her group of friends. If the show was done right it could've been a fantastic action thrill ride, but instead we're left with a hodgepodge of mini stories with the occasional action scene. Off the top of my head I can think of two examples that I could do without: photography day and school festival day. I'm sure the studio knew the cult fame and following that "biribiri" had and it's not surprising that such episodes exist, I just wish they saved them for something like DVD extras. When Railgun got down to business though it was a pretty fun show. The action was large, in your face and provided some impressive visuals. Other than the rather lame, clichéd final battle this show gets a seal of action approval.
The cast of characters is a combination of old and new, and for the most part, works pretty well. Starting off I didn't think I'd be able to hand the show since lead character Shirai Kuroko, voiced by Arai Satomi, had a fairly grating voice. It grew on me over time, and by the end felt completely natural. As for the two new main characters, Saten and Uiharu, it was really hit or miss. I Liked Saten; some of the story arcs centered around her were enjoyable. I was disappointed, however, that her skill level of zero amount to nothing. I guess I expected there to be some special case as to why she was, but alas, nothing came to fruition. Uiharu, on the other hand, didn't do it for me. First off I didn't like the character design. The row of flowers in her hair was obnoxious and irritating. Secondly I found her personality to suck. It was a bit too whiny and never quite provided anything fun or enjoyable to the show. This was especially true near the end of the show when she became pretty uptight and stubborn.
Toaru Kagaku no Railgun does a fin job of being entertaining, but failed short of becoming a great show. Certain filler episodes and some weak characters held it all back. It also lacked one of my favorite aspects from its predecessor, the Misaka/Touma interactions.