Koharu is a Japanese given name, derived from the kanji characters "小" (ko, meaning 'small') and "春" (haru, meaning 'spring'). It's often translated to mean 'little spring' or 'early spring'. In Japan, it's commonly used for females, but it can also be used for males. The name has a soft and delicate sound, befitting its association with the gentle season of spring.
"The name Koharu experienced a notable decline in popularity between 2005 and 2010, with only five births each year during that period after consistent six births annually from 2004 to 2005. The number of babies named Koharu then rebounded slightly to seven in 2011 but remained steady at five in 2012. After a decade-long lull, there was another spike with six births in 2021."