An orient graphic novel typically features distinct cultural elements. The themes can revolve around things like honor, family values, and the relationship between humans and nature, which are deeply rooted in oriental cultures. In terms of art, it might use a lot of detailed line work that is common in oriental art forms. The narrative structure can also be different, sometimes being more circular or episodic compared to Western graphic novels.
The character of Ratchett is crucial. He is the victim, but as the story unfolds, we learn that he is not as innocent as he might first appear. His past actions seem to have led to his untimely death on the train. All the characters' backstories and relationships play a vital role in making the plot of 'Murder on the Orient Express' so engaging.