Yu

Yu can also be written with the character 郁 (Yù) meaning "sweet-smelling; fragrant" and also "luxuriant". This character can also be an alternative form of:
彧 (yù) “adorned; elegant; ornate”
薁 (yù) “oriental bush berry”
燠 (yù) “warm”
https://en.m.wiktionary.org/wiki/%E9%83%81
https://www.infocina.net/dizionario

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Another character is 宇 (Yǔ) meaning "house; building; universe; eaves".
https://en.m.wiktionary.org/wiki/%E5%AE%87
https://www.infocina.net/dizionario

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Other characters can form Yu as well:
瑜 (yú) possibly meaning "excellence, flawless gem or jewel"
羽 (yǔ) meaning "feather; plume" but also "fame; honour"
https://en.m.wiktionary.org/wiki/%E7%BE%BD
https://www.infocina.net/dizionario

Also “羽”.

From Chinese ‰F "universe" or ‹Ê "jade" or –ù "happy, pleased" or ‰J "rain". Because for Chinese, different words may have the same pronunciation, but they have different meanings.