Princess Sakuya appears in Madara universe media. Hailing from a separate fantasy world distinct from modern-day Japan, she holds a royal position. Her background ties her to the struggle against the despotic Emperor Miroku, Madara's father. Princess Sakuya encounters teenager Kamishiro from modern Japan after he ventures into a mysterious shrine with his girlfriend Subaru. She informs Kamishiro he must journey to her world to aid Madara in overthrowing Miroku. Her role facilitates the connection between the modern world and the fantasy realm, acting as a catalyst for Kamishiro's involvement in the conflict. She demonstrates knowledge of the prophecy concerning Madara's destiny to challenge his father. Her actions directly involve recruiting assistance for Madara's cause, positioning her within the rebellion against Miroku's rule. During Kamishiro's journey through her world, he encounters other key figures from Madara's story, including Madara's brother and rival, Kage-Ou. Princess Sakuya's involvement helps reveal the secret connections linking the two worlds.