adverb taking the 'to' particle
with a slight breeze; gently (of wind)
Describes a soft, gentle movement of air. Often used with そよ風 (そよかぜ, 'gentle breeze') or in literary descriptions of wind.
See also: そよ風
そよと風が吹いて、花びらが舞った。
A gentle breeze blew, and the petals danced.
そよそよと風が草原を渡っていく。
The wind blows gently across the meadow.