Shizuku Karasuki

Current queen of the Karasuki kingdom, Ayame's mother and Rio's grandmother, how Zen and Ayame had to leave the kingdom has always weighted down her mind until she heard from Rio how Zen and Ayame were able of being happy together after leaving the kingdom and that he never saw regret or sadness on his mother's face, she wasn't able of avoiding to begin to weep when she heard the story of Ayame's death, unconscious if her husband's attempt of making Rio to live closer to them by making him fight Gouki she was the most happy one about Rio's victory.

(Source: Seirei Gensouki Wiki)