Noh Yun-ah, known mononymously as YUNAH, is a South Korean singer under Belift Lab. She is a member of the girl group ILLIT, formed through the 2023 reality competition show R U Next?. Noh Yun-ah, known mononymously as YUNAH, is a South Korean singer under Belift Lab. She is a member of the girl group ILLIT, formed through the 2023 reality competition show R U Next?.