1. The Three Musketeers (2014)
Hae In's character is loosely based on Aramis, from the novel by Alexandre Dumas! The series follows three Joseon-era adventurers who serve the Crown Prince as his warrior guards.
2. While You Were Sleeping (2017)
This legal + fantasy drama revolves around the lives of three people who have the ability to foresee events through their dreams. Hae In plays the role of a police officer named Woo Tak.
3. Prison Playbook (2017)
The series features the lives of convicts behind bars, their families, and the officers working in the correctional facilities. Hae In plays a commanding officer who once assaulted his teammate.
4. Heung-Boo: The Revolutionist (2018)
Hae In plays the role of King Heonjong in this movie. The story is set during the Joseon dynasty and is based on the Korean folk tale Heungbu And Nolbu. It follows an author who writes a novel to find his lost brother.
5. Something In The Rain (2018)
Yoon Jin-A (Son Ye Jin) is a single woman in her 30s who works as a supervisor at a coffee company. Seo Joon-Hee (Hae In) is the younger brother of her best friend who comes back to South Korea after finishing some work abroad. Yoon Jin-A always thought he was ~kinda~ childish, but he appears different to her now!
6. One Spring Night (2019)
When pharmacist and single father Yu Ji-ho (Hae In) meets a librarian named Lee Jeong-in (Han Ji Min), sparks fly between them.
7. Tune In For Love (2019)
Also known as Yoo Yeol's Music Album, the upcoming romance movie is set in 1994 and tells the story of Mi-Soo (Kim Go Eun) and Hyun-Woo (Hae In). Mi-Soo works part-time at a bakery store and Hyun-Woo just happens to enter the store. They keep crossing paths, but always at the wrong time!
8. Start-Up (2019)
The film is about a pair of twentysomethings, Go Taek Il (Park Jung Min) and Sang Pil (Hae In), who get into all sorts of trouble before finally learning to become adults. Hae In's character Sang Pil quits school and somehow ends up in a gang with Taek Il!
9. PH1: The Beginning Of A New World (2020)
He In plays a supporting role in the sci-fi and supernatural film about "six boys from the stars Alkaid and Alcor, arriving on Earth to save the planet from the spread of a strange virus."
10. A Piece Of Your Mind (2020)
In the drama about ~unrequited love~, Hae In plays "a kind-hearted artificial intelligence (AI) programmer who has spent years in one-sided love and has resigned himself to his lonely fate. Ha Won's unrequited love unexpectedly intertwines the fates of four different people who are each struggling with their own problems."
11. D.P. (2021)
Hae In will be playing the role of a soldier in his upcoming Netflix series, D.P., which stands for Deserter Pursuit. According to Netflix, D.P. is "the story of a young army private who unexpectedly becomes a desertion arrest officer and finds himself in confusing and complicated situations."
12. Snowdrop (2021)
Arguably Hae In's most-anticipated drama is Snowdrop, co-starring BLACKPINK's Jisoo in her first lead role. Snowdrop is set in 1987 Seoul and tells the story of university student Eun Young Cho (Jisoo), who takes care of an injured man named Im Suho (Hae In) in secret.
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