https://images.plurk.com/8lmh9b5yM1H5SRl8RcTh1.jpg
https://images.plurk.com/5Ss39bTySBIdulDqkIvuZu.jpg
Okay, so Gyokuto is older than Hisui. Gyokuto resembles Sango while Hisui resembles Miroku.

Sango has this "Ara-ara" vibe after becoming a Mother.
Gyokuto has this carefree onee-san vibe in her.
#YashahimePrincessHalfDemon