2017–2018: Career beginnings Lee made his acting debut in the 2017 black comedy
Prison Playbook, in which he portrayed the young version of
Jung Kyung-ho's character. In 2018, Lee was cast in the romantic television series
Still 17 in a supporting role as a member of the high school's rowing club. For his performance, he was nominated in the "Character of the Year" category at the
2018 SBS Drama Awards alongside
Ahn Hyo-seop and
Jo Hyun-sik.
2019: Rising popularity In 2019, Lee joined the cast of the dark fantasy television series
Hotel del Luna which became one of the
highest-rated Korean dramas in cable television. He also made a special appearance in
tvN's
The Great Show. Lee starred in
Scouting Report, the fifth drama of
KBS Drama Special's tenth season, for which he won the "Best Actor in a One-Act/Special/Short Drama Award" at the
33rd KBS Drama Awards. His performance in the drama earned him the Best New Actor award in television at the
57th Baeksang Arts Awards He received a good response for portraying a cool-headed and cynical character. In 2021, Lee appeared in
Beyond Evil, directed by
Shim Na-yeon, where he played younger self of
Shin Ha-kyun's character. Later in July 2021, Lee was confirmed to join the tvN drama
Melancholia with
Im Soo-jung, airing in the second half of 2021. In December, Lee returned to the small screen with the Netflix drama written by writer
Kim Eun-sook titled
The Glory, with
Song Hye-kyo. In 2023, Lee chose ''
Death's Game as his last project before joining the military because of the bond he made with director Ha Byung-hoon, which he worked with in 18 Again''. ==Personal life==