The origins of YunokiRoom traces back in 2013. Illustrations featuring its mascot Yunoki Itosugi has been circulating since 2018. Most of YunokiRoom as an channel's content contains a picture-story show video starring standing images on YouTube, rarely on Niconico and Pandora TV.
- Yunoki Itosugi: An butterfly that transforms to an human.
- Kotoha: An light-purple haired girl wearing Chinese outfit.
- Rumu: An fairy that accompanies Yunoki and Kotoha in their adventures.
- Mapuru Cadena: Lilith Cadena's younger sister, and also an half-imp and half-succubus.
- Chua Nishikawa: An Chinese-Korean student who can draw.
- Naoyuki Kawasaki: Naoko and Yukino Kawasaki's older brother.
- Myu Hoshizaki: An chuunibyou high school student.
- Chihaya: Chirun0z Playz' current leader since December 2019.
- Chiyu Hoshigaya: The doujin circle's VTuber in preparation.