The novel likely explores themes related to identity, culture, and romance. Onoto Watanna, who was of mixed Japanese and English descent, often incorporated elements of her own heritage into her writing, and "His Royal Nibs" may reflect her experiences navigating issues of race and ethnicity in early 20th-century America.The title "His Royal Nibs" suggests a tone of humor or satire, as it is a colloquial expression often used ironically to refer to someone in a position of authority or importance. The novel may feature a protagonist who finds themselves in comical or unexpected circumstances, perhaps involving mistaken identity or social upheaval.