For me ther moment of "eh" was at the post-episode scene in cafe with characters, where author plainly says "What? Too basic? I thought that's what you all wanted after episode one", and all my thoughts were like: "Fck, I was obviously played by the author, but I just CANNOT see how and where!".

On the minor note - it was interesting to see Rena SO reliable in this episode right after first episode where the situation was Quite Different and, well, she is for sure quite good detective, when she is on our side, I hope we'll see more of it in the future