Gyokuto

is Miroku and Sango's daughter, the younger twin sister of Kin'u and the elder sister of Hisui.

History
They were born in a house at Kaede's village.

Not much is known about their childhood/teenage years because the anime only shows them briefly as a child when Rin is giving birth to Towa and Setsuna on the night of the lunar eclipse.

Years later, Gyokuto (now an adult) lived with her mother in her old Demon Slayer village and visits her father who was being targeted by a powerful demon that consumes monks and priests. Kin'u seems to have followed in her father's footsteps and became a nun.

Personality
The twins treated Inuyasha just like Kagome did when she first met him, calling him "Doggy" and petting his ears. As usual, Inuyasha was annoyed by this as he did not like his ears being touched by anyone. They acted like most toddlers would, seeing as how they were curious and still so young. They also enjoy playing with Shippō in a way that is not enjoyable to him.

As an adult, Gyokuto is shown to be very kind, understanding and non-judgmental. Gyokuto seems to understand their father's reasoning for his training and tries to help Hisui reconcile with him, knowing Hisui perceives their father as a coward. Gyokuto is also seen being more gentle, calm, polite and well-mannered, whereas Kin'u is more outgoing, playful, cheerful and childlike.

Physical description
The twins bare a striking resemblance to their mother as they both have dark brown hair and eyes. This may be a hint that they are identical twins rather than fraternal. Kin'u wears Green, and Gyokuto wears Pink. They both have rose-colored sashes and their hair is tied up by a white ribbon.

As an adult, Gyokuto wears a larger version of the kimono that she wore when she was younger with a dark pink apron. She maintains the hairstyle from her childhood and wears brown sandals on her feet.

Trivia

 * None of the children's names were revealed in the manga.
 * The twins are two of the final new characters introduced in the entire series.
 * The twins are collectively called "KinGyo" (きんぎょ) by their parents and close friends.
 * Their names 金烏 and 玉兎 translate to "Golden Crow" for Kin'u and "Jade Hare" for Gyokuto. Miroku may have named them according to the Chinese idiom "金乌西坠，玉兔东升" – the golden crow of the sun sets in the west, the jade hare of the moon rises in the east. The idiom originates from a phrase in an ancient text.
 * In an interview in the May 2021 issue of Animage Magazine, it is revealed that Gyokuto aids her mother in creating and delivering Demon Slayer tools, as well as taking requests and collecting information on demon sightings.

Media Appearances
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Manga

 * Chapter 558
 * InuYasha Since Then

InuYasha The Final Act

 * Episode 193

Hanyō no Yashahime
}}
 * Episode 1 (Hanyō no Yashahime)
 * Episode 13 (Hanyō no Yashahime)
 * Episode 15 (Hanyō no Yashahime)