Who was the longest serving emperor of Japan?
Hirohito
Hirohito
Hironomiya Naruhito
Hirohito
Hironomiya Naruhito
Hirohito
Hirohito
Tokugawa Ieyasu
Hironomiya Naruhiko
Hironomiya Naruhito
Hironomiya Hiromoto
Tokugawa Yoshinobu
Hironomiya Narimasa
Hironomiya Nobunaga
Hirohito
Hironomiya Nobuhide
Tokugawa Ieyasu
Hironomiya Narihiro
Hironomiya Naruhito
Hironomiya Hiromoto
Hironomiya Naruhiko
Hironomiya Narimasa
Hironomiya Nobunaga
Tokugawa Yoshinobu
Hirohito
Hironomiya Nobuhide
Tokugawa Ieyasu
Hironomiya Naoshige
Hironomiya Hiromoto
Hirooki
Emperor Hirohito
Hironomiya Naruhito
Hironomiya Naruhiko
Hironomiya Narimasa
Hironomiya Nobunaga
Hirohito
Hironomiya Nobuhide
Hironomiya Naoshige
Tokugawa Yoshinobu
Tokugawa Ieyasu
Hironomiya Hiromoto
Hirooki
Hironomiya Narimasa
Emperor Hirohito
Hironomiya Naruhito
Hironomiya Nobunaga
Hironomiya Naruhiko
Hirohito
Shogun Hirohito
Hironomiya Toshiie
Akihito
Tokugawa Yoshinobu
Tokugawa Ieyasu
Hironomiya Nobuhide
Hironomiya Hiromoto
Hirooki
Taish Hironomiya
Hironomiya Narimasa
Hirohito
Hironomiya Nobunaga
Emperor Hirohito
Go-Shirakawa Yoshinobu
Hironomiya Naruhito
Hironomiya Naruhiko
Hironomiya Naoshige
Shogun Hirohito
Akihito
Tokugawa Yoshinobu
Tokugawa Ieyasu
Go-Toba Hirohito
Hironomiya Hiromoto
Hirooki
Hironomiya Narimasa
Hirohito
Hironomiya Nobunaga
Hiro-no-miya
Emperor Meiji
Emperor Hirohito
Hironomiya Naruhito
Taish Hironomiya
Hironomiya Naruhiko
Akihito
Tokugawa Yoshinobu
Tokugawa Ieyasu
Hironomiya Hiromoto
Hirooki
Hiro no Tetsujin
Meiji Emperor
Shogun Hirohito
Hirohito
Go-Shirakawa Yoshitsune
Go-Shirakawa Yoshinobu
Emperor Meiji
Hironomiya Nariaki
Emperor Go-Sakuramachi
Hironomiya Nobunaga
Hiro-Nikki
Go-Shirakawa Hirohito
Hironomiya Naruhito
Hiro no Tetsugu
Hiromoto
Emperor Hirohito
Go-Sakuramachi
Akihito
Tokugawa Ieyasu
Meiji Emperor
Go-Shirakawa Yoshimune
Go-Shirakawa
Hironomiya Naruhiko
Hiro no Tetsuji
Go-Toba Hirohito
Yoshinaka Go-Sakuramachi
Emperor Meiji
Hirooki
Hiro no Tetsuya
Hironomiya Hiromoto
Hirohito
Go-Shirakawa Hiromoto
Hiro no Tetsujin
Hironomiya Nobunaga
Shogun Hirohito
Hiromoto
Emperor Go-Sakuramachi
Taish Hironomiya
Hiro-Nikki
Go-Shirakawa Yoshitsune
Meiji Emperor
Emperor Go-Daigo
Hiro Nobuhide
Go-Toba
Tokugawa Yoshinobu
Hironomiya Naruhito
Emperor Meiji
Yoshinaka Go-Shirakawa
Akihito
Hiro no Tetsugu
Yoshinaka Go-Ichij
Emperor Hirohito
Yoshinaka Go-Sakuramachi
Taish Hirohito
Hirohito
Hirooki
Yoshinaka Go-Daigo
Hiro no Tetsuhiro
Hiro no Tetsuji
Kangxi Emperor
Hiromoto
Go-Shirakawa Hirohito
Hiro no Tetsuhira
Go-Shirakawa
Hiro no Kiyomori
Meiji Emperor
Go-Shirakawa Hiromoto
Emperor Go-Toba
Go-Sakuramachi
Hiro no Tetsujin
Emperor Meiji
Puyi
Shogun Hirohito
Kangxi Emperor Tokugawa I
Kmei Yoritomo
Hiro-Nikki
Kangxi
Hirohito
Akihito
Hiro-no-miya
Taish Hiromoto
Yoshinaka Go-Sakuramachi
Hironomiya Naruhito
Hiro Nobutake
Emperor Go-Daigo
Taish Hironomiya
Go-Toba Yoritomo
Yoshinaka Go-Shirakawa
Hiro no Tetsugu
Hiromoto
Kangxi Emperor
Hirooki
Kangxi Xianfeng
Meiji Emperor
Taish Hirohito
Go-Toba
Emperor Meiji
Yoshinaka Go-Daigo
Tokugawa Ieyasu
Puyi
Yoshinaka Go-Ichij
Shogun Hiromoto
Hiro no Tetsuji
Kangxi
Kangxi Emperor Tokugawa I
Meiji
Emperor Go-Toba
Kangxi Emperor Tokugawa
Go-Toba Hirohito
Hirohito
Akihito
Yoshinaka Go-Sakuramachi
Hiromoto
Kmei Yoritomo
Hironomiya Naruhito