Often, family relationships are explored. How his family influenced him when he was younger, like his parents' guidance or his relationship with his siblings if he has any in the fic's universe.
Since I don't know the details of the 'henry hart the great one novel', it's hard to say exactly what makes it unique. But it could be its character, Henry Hart. Maybe he has some very special traits or abilities that set him apart from other characters in similar novels.
I'm sorry, I haven't actually read 'henry hart the great one novel' specifically. It could potentially be about a character named Henry Hart who has some great adventures or achievements. Maybe it's a story of self - discovery or a heroic journey.
I'm not sure of a specific 'baby Henry Hart fanfic' off the top of my head. But you could try searching on fanfiction websites. They usually have a wide range of fics about different characters.
Since we don't have a lot of information about Charlotte Bolt and Henry Hart, we can assume that they might be characters with some special qualities. Maybe Charlotte is a very intelligent person and Henry is a brave one. They could be on a journey to solve a mystery or achieve a certain goal in their story. However, this is all just speculation without more details about the story.
Fan fiction about 'Hart to Hart' usually involves creating new stories based on the characters from the 'Hart to Hart' series. It could be about their further adventures, different scenarios in their lives, or exploring relationships in ways that the original show might not have fully delved into.
There's no way to know just from 'Henry Henry novel' whether he is the protagonist. It could be that he is just a minor character or part of a sub - plot.