Following on from the graviton acceleration-led bombings last episode, needless to say this seventh instalment of To Aru Kagaku no Railgun perseveres with that particular story arc as Judgement try to get a handle on exactly who is carrying out these increasingly dangerous and powerful incidents.
The trouble is that put simply, they don't even know where to start when it comes to tracking down the individual involved - There is nobody matching the powers in use here in their database (probably a noteworthy point on its own, as this isn't the first time this has been the case in this series), and at first glance there seems to be no rhyme or reason to the locations chosen for the attacks.
Finally however, things start to fall into place, although unfortunately only a point where Uihara finds herself in danger as the exact modus operandi of the attacker (who I imagine most of you guessed the identity of last episode anyway) is revealed. Indeed, it's left to Touma to make yet another cameo appearance to save the day, preventing a number of people from being injured using his own unique powers.
To be honest, I was quite surprised to see this story arc closed out in two episodes, as it felt like it was building up to something a little bigger than the quick conclusion reached here (although to be fair there are aspects of the story that may well run through into future episodes). Similarly, the appearance of Touma as deus ex machina felt a little unsatisfactory, although overall I suppose I can't complain too much with the way that particular scenario was presented, and it is actually quite cool to see Touma making frequent appearances at all. While I get the feeling this episode achieved everything that it intended to, I suppose I was just expecting a little more from it for some reason; it's a feeling that leaves this story arc looking a little simplistic, but maybe that's unfair considering that To Aru Kagaku no Railgun hasn't exactly been focusing on complex narratives from the very start.