We still haven’t seen a significant appearance from the cute office-lady who has a prominent place in the opening. She got a little screen time during Episode 2, but given her position in the opening, I would expect her to be a major character.
Episode 4 is mostly about wise proverbs, some of which are deeper than others.
Not so deep – in fact, if my limited Japanese is correct, this is a translator’s joke, not in the original. It refers to Mel Brooks’ Blazing Saddles, not the the tanukis of the original Japanese dialogue.