# Adult Trainee (어른연습생)
**Adult Trainee** (어른연습생) is a 2021 South Korean comedy-romance web drama produced as a TVING original, following three teenagers at the end of their teenage years as they deal with concerns in love and sexual life.[1](https://tv.apple.com/us/show/adult-trainee/umc.cmc.3snaghwftlush39wwd2613x90) It consists of seven episodes and was first broadcast on November 12, 2021.[2](https://kdrama.co.kr/dramas/adult-trainee/)
| Key fact | Detail |
|---|---|
| Original title | 어른연습생 (Adult Trainee)[2](https://kdrama.co.kr/dramas/adult-trainee/) |
| Network | TVING, a CJ ENM streaming service[2](https://kdrama.co.kr/dramas/adult-trainee/) |
| Run | November 12 to November 26, 2021, Fridays[3](https://asiapoisk.com/doramas/Adult_Trainee_2021) |
| Episodes | 7, roughly 30 to 40 minutes each[2](https://kdrama.co.kr/dramas/adult-trainee/) • [1](https://tv.apple.com/us/show/adult-trainee/umc.cmc.3snaghwftlush39wwd2613x90) |
| Writers | Kim Hyun-min, Bang So-min, and Jin Yun-joo[4](https://www.mt.co.kr/entertainment/2021/10/27/2021102709307292390) |
| Directors | Yoo Hak-chan and Jeong Hyeong-geon[1](https://tv.apple.com/us/show/adult-trainee/umc.cmc.3snaghwftlush39wwd2613x90) |
| Main cast | Ryoo Ui-hyun, Miyeon, Ryeoun, Cho Yu-jung, Kwon Youngeun, Kim Min-gi[1](https://tv.apple.com/us/show/adult-trainee/umc.cmc.3snaghwftlush39wwd2613x90) |
| Age rating | 15 in South Korea; TV-14 on Apple TV[5](https://dcollection.korea.ac.kr/public_resource/pdf/000000305532_20260215211453.pdf) • [1](https://tv.apple.com/us/show/adult-trainee/umc.cmc.3snaghwftlush39wwd2613x90) |
## Spoilers
### Premise and format
The series is described on Apple TV as the story of three teenagers with concerns in love and sexual life, in the comedy and romance genres.[1](https://tv.apple.com/us/show/adult-trainee/umc.cmc.3snaghwftlush39wwd2613x90) Korean media described it as a "혈기왕성(性) 핑크빛 코미디", a pink-tinted comedy that comically depicts the worries and love of eighteen-year-old youths.[4](https://www.mt.co.kr/entertainment/2021/10/27/2021102709307292390) A drama guide summarizes it as three different coming-of-age stories told from the protagonists' points of view, about how they deal with their realities in high school at the end of their teenage period as Gen Z.[2](https://kdrama.co.kr/dramas/adult-trainee/)
The seven episodes split into arcs centered on different characters. In the first arc, Jae-min, addicted to masturbation, puts himself on a "No Fapping" mission to ask his crush out, and someone tries to sabotage his final plan.[1](https://tv.apple.com/us/show/adult-trainee/umc.cmc.3snaghwftlush39wwd2613x90) Yoo-ra then suggests a fake relationship to her alpha-male friend Nam-ho under one condition, leading to a trip together.[1](https://tv.apple.com/us/show/adult-trainee/umc.cmc.3snaghwftlush39wwd2613x90) The final arc follows Na-eun, an overweight student who has never dated anybody, after a mysterious letter arrives for her.[1](https://tv.apple.com/us/show/adult-trainee/umc.cmc.3snaghwftlush39wwd2613x90)
## Cast
The drama cast new and young performers. Ryoo Ui-hyun plays Seo Jae-min, (G)I-DLE member Miyeon plays Ye-gyeong, Ryeoun plays Nam Ho, Cho Yu-jung plays Yoo Ra, Kwon Youngeun plays Na-eun, and Kim Min-gi plays Kang-jun.[1](https://tv.apple.com/us/show/adult-trainee/umc.cmc.3snaghwftlush39wwd2613x90) • [2](https://kdrama.co.kr/dramas/adult-trainee/) A Money Today preview of TVING's November 2021 lineup noted that, unlike the star-led thriller *Happiness* released the same month, *Adult Trainee* created a fresh atmosphere with new faces, including Miyeon and Gen Z actors such as Ryoo Ui-hyun, Ryeoun, and Cho Yu-jung.[4](https://www.mt.co.kr/entertainment/2021/10/27/2021102709307292390)
## Production and O'PEN
The drama was written by Kim Hyun-min, Bang So-min, and Jin Yun-joo and directed by Yoo Hak-chan and Jeong Hyeong-geon.[4](https://www.mt.co.kr/entertainment/2021/10/27/2021102709307292390) • [1](https://tv.apple.com/us/show/adult-trainee/umc.cmc.3snaghwftlush39wwd2613x90) CJ ENM's 2021 ESG report identifies it as a TVING original high-teen drama written by a writer selected in the 4th cohort of O'PEN, CJ ENM's program that supports new writers through script development, single-episode production, and connections to production companies.[6](https://web-cf-image.cjenm.com/public/share/contentsmng/pdf/CJ-ENM-2021-ESG-REPORT-%28EN%29.pdf) CJ ENM's investor materials list it in TVING's late-2021 content lineup alongside *[Work Later, Drink Now](https://www.edgepedia.org/work-later-drink-now)*, *Happiness*, and *Love Catcher in Seoul*.[7](https://cjenmir.irplus.co.kr/fileupload/analyst_e/202202/20220214_cjenm1.pdf)
## Release and availability
New episodes were released on TVING on Fridays at 16:00, and the run lasted from November 12 to November 26, 2021.[8](https://www.youtube.com/watch?v=kQxkjpuvFVs) • [3](https://asiapoisk.com/doramas/Adult_Trainee_2021) The series carries a 15 age rating in South Korea.[5](https://dcollection.korea.ac.kr/public_resource/pdf/000000305532_20260215211453.pdf) Apple TV's listing shows six episode entries with runtimes of 30 to 40 minutes, while most databases list the series as seven episodes.[1](https://tv.apple.com/us/show/adult-trainee/umc.cmc.3snaghwftlush39wwd2613x90) • [2](https://kdrama.co.kr/dramas/adult-trainee/) As of the most recent provider data, it streams on TVING in South Korea and, in the United States, on [The Roku Channel](https://www.edgepedia.org/the-roku-channel) and Tubi TV.[2](https://kdrama.co.kr/dramas/adult-trainee/) The drama guide records a TMDB user rating of 7.3 out of 10 from 52 votes.[2](https://kdrama.co.kr/dramas/adult-trainee/)
## References
1. [ADULT TRAINEE, Apple TV](https://tv.apple.com/us/show/adult-trainee/umc.cmc.3snaghwftlush39wwd2613x90)
2. [Adult Trainee, KDrama.co.kr](https://kdrama.co.kr/dramas/adult-trainee/)
3. [Подготовка к взрослой жизни / Adult Trainee, AsiaPoisk](https://asiapoisk.com/doramas/Adult_Trainee_2021)
4. [11월 드라마 대전 ㅣ OTT의 파상공세 ②, Money Today (2021)](https://www.mt.co.kr/entertainment/2021/10/27/2021102709307292390)
5. [Dissertation episode/rating table, Korea University dcollection](https://dcollection.korea.ac.kr/public_resource/pdf/000000305532_20260215211453.pdf)
6. [2021 CJ ENM ESG Report (EN)](https://web-cf-image.cjenm.com/public/share/contentsmng/pdf/CJ-ENM-2021-ESG-REPORT-%28EN%29.pdf)
7. [CJ ENM Company Update, Tving content lineup (2022)](https://cjenmir.irplus.co.kr/fileupload/analyst_e/202202/20220214_cjenm1.pdf)
8. [어른연습생 재민편 5분 미리보기 공개, TVING official YouTube](https://www.youtube.com/watch?v=kQxkjpuvFVs)
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*Topic: Encyclopedia › Arts and culture › Screen and stage › Film and television › Series and fictional screen worlds › International serial drama and telenovelas › East Asian drama series › East Asian web and streaming serials › Titles symbols to Co*
*Initially written Oct 3, 2026 · Reviewed: Oct 25, 2026 · Edited: Oct 15, 2026; Oct 25, 2026; Nov 1, 2026 · Last review: Oct 25, 2026*
*Copyright 2026 EdgeChat AI, a subsidiary of Biostate AI.*
License: Edgepedia Community License 1.0, https://www.edgepedia.org/edgepedia/license