Kou is of Japanese origin and translates to "light" or "enlightenment". It's composed of two characters: '光' (kou) meaning light, and can be used as a given name for males and females. Kou is often associated with brightness, clarity, and understanding in Japanese culture.
"The name Kou experienced a significant peak in popularity between 1980 and 1992, with the highest number of births recorded in 1992 (48). After that period, there was a steady decline, reaching a low point in 2007, 2009, and 2017 with only 5 births each. Overall, between 1979 and 2017, the name Kou was given to 691 newborns."