Well, Railgun is over. For the second arc of the series being an original work made specifically for the anime, it was very well written and not at all filler-ish, like every other series (Bleach, Naruto come to mind). I can’t wait for Index 2! I think I heard it’s coming this fall/winter, but now that I look for that information I can’t seem to find it anywhere :/ please let it be true!
Also, I can’t believe I didn’t notice this until I went to Mazui‘s website: