Across the world, Koukai (Кукай , Koukai ) is a very rare gender-neutral forename. More prevalently, Koukai is the last name as well as the forename.
Kokai, Takagai, Takahashi, Takahasi, Takai, Takakai, Takanishi, Takashina, Takasina, Такаи, Такасина, Такахаси, كوكاي, コウカイ, and 寇凯
Sam, and Armantos
, Koukai 
) is a very rare gender-neutral forename. More prevalently, Koukai is the last name as well as the forename.