The year he turned 19, he began acting as the youngest cook in SBS’s Temperature of Love.
In 2019, he played Han Bit in KBS2’s Doctor Prisoner and also appeared in the web drama In-Seoul. In 2020, he appeared in MBC’s 365: Repeat the Year as the youngest detective, then in KBS2’s Homemade Love Story and JTBC’s 18 Again. OhmyNews writes that he drew attention in 18 Again. In March 2021, Homemade Love Story ended. In 2022, he played a statistical analyst in Through the Darkness and won Best New Actor at the SBS Drama Awards at year’s end.
The breakthrough yearThe year he turned 25, he became known by taking his first lead role in SBS’s The Secret Romantic Guesthouse. It came six years after his debut. That year he also starred in tvN’s Twinkling Watermelon, and in December he won an Excellence Award at the SBS Drama Awards.
In December 2024, the Genie TV original Namib began airing on ENA. In 2025, he appeared in History of Scruffiness and played Park Hu-min, the leader of Eunjang High School, in Netflix’s Weak Hero Class 2.
In 2026, he played the serial killer Lee Woo-gyeom in Disney+’s Bloody Flower and made his first screen appearance in the film Okay! Madam 2, which opened in August.
Ryeoun (born 1998) began acting in 2017, the year he turned 19, in SBS’s Temperature of Love. He became known on Mar 20, 2023, the year he turned 25, when he took his first lead role in SBS’s The Secret Romantic Guesthouse. In December that year he won an Excellence Award at the SBS Drama Awards.
Ages are by calendar year (the year minus the birth year), birthdays aside.
Began acting in the role of the youngest cook.
Source 01 · Star News (Korean) · Ryeoun filmography · opens in a new tabSource 02 · iMBC Entertainment (Korean) · Okay! Madam 2 cast confirmed · opens in a new tabSource 28 · Top Star News (Korean) · Okay! Madam 2, transformation into a magician · opens in a new tab The broadcast date was not confirmed in news reports, so only the year is given.The Wednesday-Thursday drama in which he played Han Bit ended that day.
Source 04 · Star News (Korean) · Doctor Prisoner finale · opens in a new tabHe appeared in the web drama with Min Do-hee and Jin Ye-ju. Episode 7 aired on Aug. 19.
Source 30 · Xports News (Korean) · In-Seoul episode 7 · opens in a new tab The first release date was not confirmed, so the month of episode 7 is given.He played Nam Sun-woo, the youngest detective on Violent Crimes Team 1. The drama ended on Apr. 28.
Source 05 · Sports Donga (Korean) · 365: Repeat the Year first broadcast · opens in a new tabSource 06 · Xports News (Korean) · 365: Repeat the Year finale · opens in a new tabA weekend drama in which he appeared with Lee Jang-woo, Jin Ki-joo, Bona, Jeon In-hwa and Hwang Shin-hye, among others.
Source 07 · Star News (Korean) · Homemade Love Story · opens in a new tab Titled Oh! Samgwang Villa in Korean.He played Hong Shi-woo, one of the twin sons.
Source 08 · Korea Economic Daily (Korean) · 18 Again finale comments · opens in a new tabSource 29 · OhmyNews (Korean) · Three standout actors in Weak Hero · opens in a new tab The finale date was not confirmed. OhmyNews writes that he drew attention for the role of Hong Shi-woo in this drama.The weekend drama in which he played Lee Ra-hoon, the youngest son of Lee Sun-jeong (Jeon In-hwa), ended that day.
Source 31 · Sports Donga (Korean) · Homemade Love Story finale interview · opens in a new tabHe played Jung Woo-ju, a statistical analyst on the criminal behavior analysis team.
Source 09 · Newsis (Korean) · Through the Darkness · opens in a new tabHe received it for Through the Darkness, together with Bae In-hyuk and Kim Hyun-jin.
Source 10 · News1 (Korean) · 2022 SBS Drama Awards Best New Actor · opens in a new tabHe played Lee Seol, a deposed royal heir who also goes by Kang San, in his first historical drama and first lead role. It came six years after his debut.
Ratings stayed in the 3 to 4 percent range, and the final episode drew 5.0 percent.
Source 12 · Star News (Korean) · First-half 2023 drama roundup · opens in a new tabHe played Ha Eun-gyeol, a high school student born to deaf parents, in his second consecutive lead role. The final episode drew 4.5 percent.
Source 14 · Sports Seoul (Korean) · Twinkling Watermelon scheduled · opens in a new tabSource 15 · Hankook Ilbo (Korean) · Twinkling Watermelon finale · opens in a new tabSource 17 · JTBC (Korean) · Weak Hero Class 2 casting · opens in a new tabSource 16 · OSEN (Korean) · EXchange 3 guest · opens in a new tabSource 13 · OSEN (Korean) · Ryeoun rises as a leading actor in his 20s · opens in a new tab The first broadcast date of Sept. 25 comes from a pre-air schedule article. In Dec. 2023, OSEN wrote that he became a rising star through this drama following The Secret Romantic Guesthouse.His appearance in a Netflix series was reported. It was his first action coming-of-age story.
Source 17 · JTBC (Korean) · Weak Hero Class 2 casting · opens in a new tabHe received it for The Secret Romantic Guesthouse, together with Shin Ye-eun, one year after winning the newcomer award.
Source 18 · Sports Donga (Korean) · 2023 SBS Drama Awards · opens in a new tabSource 19 · Star News (Korean) · 2023 SBS Drama Awards Grand Prize · opens in a new tabSource 01 · Star News (Korean) · Ryeoun filmography · opens in a new tabHe appeared with Go Hyun-jung, Yoon Sang-hyun and Lee Jin-woo, playing Yoo Jin-woo, a longtime trainee who had been dropped.
Source 20 · Top Star News (Korean) · Namib press conference · opens in a new tabSource 21 · The Fact (Korean) · Namib finale comments · opens in a new tabIn the 12-episode series, he finished the role of Yoo Jin-woo, who fulfills his dream of becoming a singer.
Source 21 · The Fact (Korean) · Namib finale comments · opens in a new tabHe appeared with Jo Byung-gyu, Jung Jae-kwang and Jung Yong-ju as one of four 20-year-old boys.
Source 22 · Star News (Korean) · History of Scruffiness · opens in a new tabHe played Park Hu-min, the leader of Eunjang High School. The series reached No. 2 on the global TV shows list on release and became No. 1 in South Korea on Apr. 27.
Source 23 · Top Star News (Korean) · Weak Hero Class 2 · opens in a new tabSource 24 · The Public (Korean) · Weak Hero Class 2 No. 1 in Korea · opens in a new tabIt was reported as his first commercial film.
Source 02 · iMBC Entertainment (Korean) · Okay! Madam 2 cast confirmed · opens in a new tabHe played the serial killer Lee Woo-gyeom.
Source 03 · TenAsia (Korean) · Bloody Flower · opens in a new tabSource 25 · MBN (Korean) · Bloody Flower finale Q&A · opens in a new tabHe appeared on the big screen for the first time as Ji-hoon, a magician on a luxury cruise ship.
Source 27 · Hankook Ilbo (Korean) · Okay! Madam 2 · opens in a new tabSource 26 · JTBC (Korean) · Okay! Madam 2 press conference · opens in a new tabEND OF SELECTED RECORDSSelected records, 2017–2026 · not a complete list of work. “Key moment” is an editorial label, not a measure of success.
What did they do, and at what age?
AgeTrail lines up the key moments of a life by age.
Debut and breakthrough are marked separately, and every record has a source.
Film & TV · South Korea
1998 —
Ages are counted from the birth year 1998: the year of the event minus 1998, birthdays aside. “Key moment” labels and the connecting story are AgeTrail's editorial reading.
Fact-checked: 2026.10.03 · An independent archive, not affiliated with the person or their agency.