Ryeoun is an actor born Go Yoon Hwan in Wansan-gu, Jeonju, Jeollabuk-do, South Korea. He graduated from the department of performing arts of Seokyeong University, majoring in acting. He made his acting debut in the 2017 SBS drama "Temperature of Love" (사랑의 온도). He won the Best New Actor award at the SBS 2022 awards. In 2023, he had his first and second television lead roles in The Secret Romantic Guesthouse and Twinkling Watermelon.