Haerin is from the Korean hae (해 — sea, ocean) + rin (린 — jewel, precious). Haerin in modern Korean naming — has experienced a surge in popularity since 2022 due to NewJeans's global success.
Haerin 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.
In Pythagorean numerology the letters of Haerin reduce to 1, The Leader. This is a traditional interpretive system, not a factual claim about the name.