Review Detail of burmis in One Piece : Kingdom Building System

The story has a fine plot, and I really like the idea of making a kingdom. But there is no greater character development nor any great Emotional attachments to any of the characters. About the grammar, I am a person who can read MTL and live with it. But the way the author never use she or her and instead only uses he or His. Is the most obvious and annoying grammar errors in the story.