phonetic used in Korean place names
倻 is a rare kanji used phonetically in Korean place names. It has no clear standalone meaning in Japanese.
倻 combines 亻 (person) with 耶, which likely contributes the sound. It is used phonetically for Korean place names, and its historical development beyond that is uncertain.
A person 亻 standing beside the phonetic 耶, used only to represent a sound in Korean place names. Think of it as a name tag for a location.
For ヤ, imagine a person shouting 'Yah!' to get attention in a busy Korean marketplace: Yah -> ヤ, and the person radical 亻 reminds you it's a name-related character.
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