Persephone mentions how she thinks Hades smells — like forest fire in winter, a scent that is comforting to her. This is in sharp contrast to how Minthe described that Hades reeks of death.

A head of a stag is found in Artemis’ bedroom. In mythology, the stag is an animal sacred to Artemis. In some versions, the stag is said to be one of the first animals the Goddess of the Hunt has captured.

Hades has a habit of twisting a piece of paper when he’s nervous. It is later revealed that Persephone has the same nervous habit.

There is a pomegranate at the back of Hades’ phone, the first indication of Pomegranate Tech. It is equivalent to the tech company, Apple, which bears a logo of an apple.