A Certain Magical Index II

Due to understand more about this anime, I read about grimoire on Wikipedia, and considering to purchase Orwen Davies' several grimoire guide books these days.

The anime is fun, but sometimes it went too much far from normal people's common sense. I don't know other anime or movies that protagonist swang full blow to the women's face in the battle, and I couldn't completely follow the story why a war suddenly emerged around the end of the story. And above all, I knew while I read the review for the tlanslated vesion of original novel at ANN, that Stiyl Magnus was fourteen years old.

I've watched the previous series (A Certain Magical Index(I)) preceded to watch II, but I skipped Railgun so, should I watch those railgun series during this year end holidays. umm...