| Family | |||||||||||
| Gr.-Gr.-Grandparents | Great-Grandparents | Grandparents | Parents | ||||||||
| Shiro Yamabuki | Riki Fuji | Grandfather (*) | Yuki(*) | ||||||||
| Gr.-Gr.-Uncles / -Aunts | Great-Uncles | Uncles / Aunts* | |||||||||
| 4 Unnamed | Aka* Gin 1 Unnamed | Joe Weed Kinumaru* Yukimura | |||||||||
| Siblings | |||||||||||
| Jirōmaru Saburōmaru Tarōmaru | |||||||||||
| Vetter zweiten Grades | |||||||||||
| Bellatrix Kōshirō Rigel Sirius 3 Unnamed Shion* 8 Unnamed* | |||||||||||
| Married Relatives | |||||||||||
| Great-Aunt-In-Law | Aunts-In-Law* | ||||||||||
| Sakura (*) | Billy* Hitomi Koyuki | ||||||||||
*Koyuki's grandmother is unknown; Koyuki's father is unknown; Aka is Koyuki's half uncle; Joe, Weed and Yukimura are Koyuki's second uncles; Shion and the 8 unnamed are either Koyuki's first or second cousins; Hitomi and Koyuki are Koyuki's second aunts-in-law; Kinumaru is either Koyuki's first or second aunt; Eventually, at least one of Koyuki's great-aunts-in-law is unknown; Billy is either Koyuki's first or second uncle-in-law.