ソラさん ダウナー研究者お姉さん 青空杏花
Original character by yasashii_naizou. Sora-san is a 32-year-old "downer researcher-lady." She has long, messy, grey hair, and sports a dirty labcoat.
She is voiced by Guratsu Chie (具羅津ちえ) in the ASMR series