Youth of May Season 1

Lee Do-hyun

Lim Dong-hyun, better known as Lee Do-hyun (이도현) is a South Korean actor and model managed by Yuehua Entertainment. He is known for his prominent roles in Sweet Home, Hotel del Luna, and 18 Again. Lee Do-hyun 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 as a member of the high school's rowing club as well as the second male lead's best friend. 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. The three actors performed g.o.d's One Candle during the ceremony. The same year, Lee also appeared in Clean with Passion for Now, playing the female lead's younger brother and a promising Taekwondo athlete. 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. In 2020, Lee starred in the romantic comedy 18 Again, based on the American film 17 Again, where he played Zac Efron's counterpart. This was Lee's first lead role in his career, albeit a joint lead role he shared with Yoon Sang-hyun. Later that year, he also starred as Lee Eun-hyuk, the second leading male character in Netflix's Sweet Home, adapted from the webtoon of the same name.

Go Min-si

Go Min-si (Hangul: 고민시; born February 15, 1995) is a South Korean actress, model and director. She is best known for her roles in Love Alarm (2019-2021), Sweet Home (2020), and Youth of May (2021). Go made her directorial debut in the 2016 film Parallel Novel in which she also co-starred. She has also appeared in South Korean mystery action film The Witch: Part 1. The Subversion (2018).

Lee Sang Yi

Geum Sae-rok

Oh Man-seok

From Wikipedia, the free encyclopedia. Oh Man-seok (born January 30, 1975) is a South Korean actor. He studied at Seoul Yeong-dong High School, and earned a major in theatres at the Korea Arts Unification School. His acting debut was in 1999 in the play Faust, but he is mostly known for his role as Jang Taek Gi in The Vineyard Man. He was married to Jo Sang Kyung, with whom he has one daughter, but they divorced after 6 years. He starred in the Korean drama Jolly Widows that debuted in 2009. This played in Korea as well as in North America. In this drama he plays the son of a widow who lost her husband in a boating accident. Description above from the Wikipedia article Oh Man-seok, licensed under CC-BY-SA, full list of contributors on Wikipedia.                    

Kim Won-hae

Kim Won-hae (김원해) is a South Korean actor.

Uhm Hyo-seop

Uhm Hyo Sub was born in Incheon, South Korea. He mainly plays supporting roles in movies and television dramas.

Hwang Young-hee

Shim Yi-young

Park Chul-min

Park Chul-min is a South Korean actor.