Where are Towa, Setsuna, and Moroha's parents in 'Inuyasha' sequel ' Yashahime: Princess Half-Demon?

This kick-ass trio have not only courage, intelligence, and skill in common, but also, missing parents! Just where are these missing parents, anyway?

Yashahime: Princess Half-Demon Moroha and Kagome's emotional

Yashahime: Princess Half-Demon Part 2 - What We Know So Far

Setsuna, InuYasha

INUYASHA SIT BOY — Moroha and Setsuna and Towa was transported into

Inuyasha sequel Yashahime: Princess Half-Demon - Page 2 - Anime

Yashahime - Towa, Setsuna and Moroha (1) by Genesect1999 on DeviantArt

EP. REVIEW: Yashahime: Princess Half-Demon [6/29] - Forum - Anime

Crunchyroll - That doesn't sound like an empty threat, Moroha

Where are Towa, Setsuna, and Moroha's parents in 'Inuyasha' sequel

Yashahime: Princess Half-Demon / Characters - TV Tropes

Setsuna, InuYasha