Surname Betsui (Betsui ) , globally, is quite a common cognomen. The family name Betsui is habitual in Eastern Asia, particularly Japan, where it is quite a rare surname.
ベツイ
Koji, Takeshi, Takashi, Yoshio, Toshio, Takumi, Kakeru, Mitsuo, Osamu, Tomoaki, Hideo, Kenji, Kazuo, Ayano, Aimee, Akira, Showa, Masao, Eiji, Kunio, and Hiroshi
) , globally, is quite a common cognomen. The family name Betsui is habitual in Eastern Asia, particularly Japan, where it is quite a rare surname.