Spoiler for ep3:
4 months since I've seen the previous episode, and any interest in the characters have faded...
Glasses-woman played basically no role at all this episode, except shout and shout, so let's put her aside.
The whole episode was really about that blond(?) haired guy.
It was pretty immersing. Not really the story, just the action and violence.
First part of the episode was kind of boring, where we see the reason he is working as one of those monster destroyers and why he wants to take revenge against the protagonist.
Then the rest was pretty interesting, where his sister dies and he starts shooting everyone involved with the continuous appearances of demons. Then he faced off against the protagonist, became a demon himself (this scene was pretty intense, where he shattered and... well... yeah), and gets killed.
Oh yeah, that little girl was there too. But she doesn't do anything or what, so, meh...
And it's over... Didn't really find the story itself interesting, but the action was fun, so time well spent. Never going to read the novels though.