That was a good first episode. The climax had plenty of memorable moments and I really want to see what the deal is with that Misaki girl now.
Pretty mixed about FUNimation's sub. How they go from Onee-sama to Sissy I will never understand. And adding "Miss" every time -san is used strikes me as pretty unnecessary, but eh. I will get over it.
The intro, as expected of Railgun, is pretty top-notch. Not quite as great as the second one, but it's pretty great.