Choi Young-jae (Youngjae), South Korean singer and actor, Friendly Rivalry cast portrait

Choi Young-jae

BIOGRAPHY

Choi Young-jae (Korean: 최영재; born 17 September 1996 in Mokpo, South Jeolla), who performs as Youngjae and releases solo music as Ars, is a South Korean singer, songwriter, composer and actor signed to SUBLIME. He plays Nam Byeong-jin in Friendly Rivalry (2025).

He debuted in 2014 as a member of GOT7 and released his first solo mini album, Colors from Ars, on 5 October 2021. His acting work runs alongside the music rather than replacing it.

BLGLFlix editorial view

His credit list runs to thirty-nine entries, and that number is close to useless without a filter. Strip out the variety appearances, the concert films, the GOT7 group content and the shows where the character name is simply his own, and five acting roles remain: Youngjae in the web drama Dream Knight (2015), Sam in So Not Worth It (2021), Kim Seung-hyu in Love & Wish (2021), Jung Haram in the filmed musical Midnight Sun (2021), and Nam Byeong-jin in Friendly Rivalry (2025). One of the thirty-nine, Idol Radio, accounts for seven hundred and fourteen episodes on its own, as the presenter.

We spell this out because the raw total is the sort of figure that gets copied between sites until it reads as a filmography. It is not one. He is a musician with a decade of screen presence and five acting jobs, and Friendly Rivalry is the first of them in a project of real dramatic weight. That is a more interesting fact than thirty-nine, and it is the true one.

Friendly Rivalry is a sixteen-episode South Korean mystery thriller with a girls’ love throughline, and the only title on his record that brings him into this catalogue. Nam Byeong-jin is a figure from co-lead Woo Seul-gi’s past at the orphanage, resurfacing partway through the run to pull her toward more dangerous ground. Our record of the series, with the full cast, is at Friendly Rivalry.

A note on the credit data itself: Love & Wish appears twice, once as a film and once as a series. It is one work with two database records, and we count it once.

Height, weight, blood type, MBTI and body type are not published by two independent reliable sources and stay empty. This site does not carry claims about anyone’s private life, and no relationship or dating field is filled here.

PROFILE DETAILS

Native Name
최영재
Real Name
Choi Young-jae
Nickname
Youngjae, Ars
Pronouns
he/him
Born
(Age 29)
Birthplace
Mokpo, South Jeolla, South Korea
Western Zodiac
Virgo ♍
Chinese Zodiac
Rat 🐭
Nationality
Debut
2014 — GOT7 (music group debut, 2014)
Agency / Label
SUBLIME
Years Active
2014-present

FREQUENTLY ASKED QUESTIONS

Who is Choi Young-jae?

Choi Young-jae, who performs as Youngjae, is a South Korean singer, songwriter, composer and actor born 17 September 1996 in Mokpo. He debuted with GOT7 in 2014 and is signed to SUBLIME.

What role does he play in Friendly Rivalry?

Nam Byeong-jin, a figure from co-lead Woo Seul-gi’s past at the orphanage who resurfaces partway through the series.

How many acting roles has Choi Young-jae had?

Five: Dream Knight (2015), So Not Worth It (2021), Love & Wish (2021), the filmed musical Midnight Sun (2021) and Friendly Rivalry (2025). Credit databases show thirty-nine entries, but the rest are variety shows, concert films and GOT7 content.

What is Ars?

The stage name he releases solo music under. His first mini album, Colors from Ars, came out on 5 October 2021.

Biographical details and any photograph on this page come from TMDB and the sources named in our editorial notes. This product uses the TMDB API but is not endorsed or certified by TMDB. BLGLFLIX is an independent reference site with no affiliation to the person profiled or their agency, and does not publish speculation about anyone’s private life. Full copyright, correction and takedown policy: Disclaimer.

Sources

2 sources

Every factual claim on this page is taken from the records below. Where two sources disagree, the disagreement is stated in the text rather than resolved silently.

  1. TMDBTMDB person record 1500918, for the date of birth, birthplace, agency, solo debut and the full thirty-nine entry credit list analysed above themoviedb.org/person/1500918
  2. WikipediaEnglish Wikipedia, Friendly Rivalry, for the cast list and the Nam Byeong-jin character en.wikipedia.org/wiki/Friendly_Rivalry

This product uses the TMDB API but is not endorsed or certified by TMDB.

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