Riou Hyou Jr.

Age: 10

Riou Hyou Jr. is the Secretary of the Cave of Immortals and the son of Riou Hyou Sr., the de jure head of the Hyou Clan. He shares the same name (both pronunciation and kanji) as his father. Seen as a mysterious individual from his clan, Riou is considered to be rather mature for his age and many remark that his personality is reminiscent of his mother's and grandfather's. He tends to utilize a impolite and familiar speech pattern with people, save his father and grandfather. Though he often complains about having to do things he doesn't want to do, Riou is said to be very frank and intelligent, possessing a natural intuition for politics and has been highly educated by the Hyou clan.

(Source: Saiunkoku Monogatari Wiki)