Megaria21 | 윤서영

Aktor · Lahir 2007 · South Korea

Megaria21 | Yun Seo-young, known professionally as YSY, is a South Korean rapper-songwriter and dancer under Chapter-I. She is the leader of the girl group H//PE Princess, formed through the 2025 survival show Unpretty Rapstar: HIP POP Princess, and a former pre-debut member of the girl group VVS. She made her solo debut on June 25, 2024, with the collaboration single "Love Me No More (Remix)".