ういしぐれぇ しぐれうい どろういんぐ
Shigure Ui's virtual YouTuber avatar. Her personal emoji is 🌂 (closed umbrella).
See Danbooru post #4216367 for reference sheet.
She has short light brown or blonde hair and green eyes, her regular hairstyle consists of french side braids that turn into hair rings held with pom pom hair ornaments swept blunt bangs.