Yumi is a Japanese name with several possible kanji. 弓 means "bow" (the weapon). 由美 combines 由 (reason, cause) and 美 (beauty) — "beautiful reason." 優美 means "gentle beauty." Each set of parents chooses the kanji they want.
Yumi has been a popular Japanese girls' name throughout the 20th and 21st centuries. The singer Yumi Matsutōya (Yuming) is one of Japan's most beloved artists.
Yumi 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 Yumi reduce to 5, The Seeker. This is a traditional interpretive system, not a factual claim about the name.