Lolicon... The dude certainly has a funny sister.
It was a fine episode. Actually nothing much more is known than was after the first episode, aside from the technical aspect how the victims are infected with the bugs and what is the, probably, first encounter of Shindou and the girl from his dreams. Well, I suppose that's enough for one episode, after all. Yeah, and something Shindou apparently inhereted from the incident years ago. Actually it's plenty for one episode.
This certainly seems like a good series, based on the first two episodes. Somehow the graphics don't quite seem as clean as in GTO, but perhaps that's just a false memory.