Question: Aiko, Princess Toshi is the only child of Crown Prince Naruhito and what princess who was born on December 9, 1963, and is a member of the Imperial house of Japan through marriage?
Sentence (from "Masako, Crown Princess of Japan"): Masako, Crown Princess of Japan (皇太子徳仁親王妃雅子 , Kōtaishi Naruhito Shinnōhi Masako ) , born Masako Owada (小和田雅子 , "Owada Masako" ) on 9 December 1963, is the wife of Naruhito, Crown Prince of Japan, who is the eldest son of Emperor Akihito and Empress Michiko and the heir apparent to the Chrysanthemum Throne.
Relevant evidence: Yes