Very subtle "adult" details, easy to overlook. In one episode a wife asks the central character if her husband "ever gets bored" in his job. The girl replies that he has taken his old job into his new job. The husband comes back home, sees his wife at her most ravishing, and suddenly is caught up in her beauty. He wants to get her alone, shouting at the girl, "Why are you still here?"
There are some comments regarding pediphile relationships. The show is placed in a primitive environment when younger relationships were a normal occurrence. However, the children referred to in the comments start around six years old. Everyone denies having those feelings, but the comments are made.
Other than underage relationship comments, nothing sexual occurs in the show.