The kanji for ''sayounara'' is 左様なら

I'm curious about the kanji 左 which means ''left'' as in ''your left hand''.

What is it doing here ?

My understanding is that 左様 means ''this way'' or ''like this'' but why is
''left'' used ?

To me 左様 looks more like ''the left way''.

All thoughts and insights welcome.
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2020-10-31T12:51:09.763
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2020-10-31T12:51:09.763
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kanji
Analysis of kanji for ''sayounara''