There is one place named Sai in Japan.
All places in the world called "Sai".
Ono (18)
Ota (17)
Hongo (16)
Minato (15)
Wada (15)
Kawasaki (14)
Hama (14)
Tomari (14)
Ohama (14)
Oshima (13)
Hara (13)
Nagahama (13)
Nakamura (13)
Sakai (12)
Okubo (12)
Yoshida (12)
Seto (11)
Hirose (11)
Kawaguchi (11)
Funakoshi (11)
Okawa (11)
Kanayama (11)
Shinden (11)
Ogawa (10)
Ohara (10)
Shirahama (10)
Nakayama (10)
Shimizu (10)
Takada (10)
Yamada (10)