I'm always annoyed when the villains slaughter people left and right and then the good guys (if you can call anybody that in this show) allow them to escape no questions asked. Why the the S rank super woman from the guild allow those two to escape? They were no match for her at all, as we saw. Quite a plot hole. In fact even Nic could have disposed of them if he had dealt with Delly's sister right when he had her pinned down in the beginning. Instead he was just staring at her and granting her all the time in the world to turn the tables. You'd think a dude who has been a mercenary since he was nothing but a little kid would know better.
The feeling of the story following a script, not logic or anything else, was quite heavy here.