Kohana Wilson — modern Japanese-American figure. Kohana Inc. — Japanese fashion brand. Kohana Café — popular Japanese café chain. Kohana in modern Japanese popular culture — appears widely across anime, manga, and J-pop; the iconic character Kohana appears in various anime including Hanamonogatari (2014). Princess Kohana — modern Japanese heritage naming.
Kohana does not currently appear in the US Social Security Administration's top 1,000 girls' names, so we don't publish a US rank or birth count for it. That says nothing about the name's standing elsewhere in the world — only that it sits outside the ranked US data we rely on.
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In Pythagorean numerology the letters of Kohana reduce to 5, The Seeker. This is a traditional interpretive system, not a factual claim about the name.