So in Episode 1 and Episode 17, Sad Smile is referred to as the Lord of Cobalt but sometimes he is referred to as the Lord of Cobalt Castle.
I'm guessing Cobalt and Cobalt Castle are used interchangeably.
Should we have a separate name for the castles and 'Countries' or keep them the same? It's very strange tbh. I'm leaning towards separating them. The author is inconsistent with the naming.