It's not a common phrase. 'Sit' and'stay' are simple verbs. 'Love' is a strong emotion. 'A wish' is something desired. Maybe 'novel' here implies it could be related to a story where these elements like sitting, staying, love and a wish play a role.
The words'sit' and'stay' might represent a state of being or an action in the context of the novel. 'Love' is a broad concept that can take on many forms in literature, from romantic love to love for family or friends. 'A wish' could be a plot device, like a character's wish that sets the story in motion. Since it's just this phrase, it's really open - ended, but it could potentially be the essence or a summary of what a particular novel is about.
Well, 'sit' and'stay' could potentially be commands or actions in a story within the novel. 'Love' is often a central theme in many novels. And 'a wish' could be a driving force for a character. So perhaps it's about a novel that combines these aspects in some way, but without more context it's hard to be more specific.