Birthday: October 17 (Libra)

Kaoru is an elderly man with short white hair and black eyes, who has discernible wrinkles on his face and light stubble around his chin. He stands at a shorter height than his grandson, Wakana, and is slightly hunched over as well. He wears the same kind of work outfit as Wakana (a samue) along with glasses, and black-laced sandals.

Kaoru is a caring grandfather towards Wakana, having looked after him since the death of his parents. He is shown to be passionate and loving towards the art of creating hina dolls and supports his grandson in his goal to become a kashira-shi (hina doll maker) like him.

Kaoru is dedicated to his hina doll art and takes it very seriously, saying that should he miss even a single day's work, it would take three days for him just to regain that level of practice.

(Source: Sono Bisque Doll Wiki)