?? ??-????

?? ??-???? ( ?????? : 구자성 , ??????????: Koo Ja-sung ; ???? 22 ??????? ?.?. 1992) ???????????????????????????????? ^[1]

???????????? [ ??? ]

?? ?.?.	??????	?????????	?????	????????
2017	The Blue Sea		??? ??-??	5 ???
2018	Misty	JTBC	???? ??-???	^[2]^[3]
2019	The Secret Life of My Secretary	SBS	?? ??-??	^[4]
2020	Was It Love?	JTBC	?? ???-??
2021	Drama Special ? Siren	KBS2	??? ??-???	^[5]
2022	Sponsor	Channel IHQ	????? ???-???	^[6]^[7]

↑ 8 Rising Actors Who Caught Our Eyes Through Supporting Roles
↑ JTBC | Misty Official Website
↑ "Koo Ja-sung to star in "Misty" as Kim Nam-joo's junior reporter" . Hancinema . Biz Enter . ??????????? January 15, 2018 .
↑ SBS | The Secret Life of My Secretary Official Website
↑ Jeong Ji-eun (August 24, 2021). "최진혁-박성연-조달환-구자성, TV시네마 미스터리 스릴러극 '사이렌' 出演!" [Choi Jin-hyuk, Park Seong-yeon, Jo Dal-hwan, Koo Ja-seong to appear in TV Cinema Mystery Thriller 'Siren'!]. KBS (??????????). Naver . ??????????? August 24, 2021 .
↑ Moon Ji-yeon (July 16, 2021). "[公式] 구자성, '欲望' 出演確定..主演合流豫告" [[Official] Koo Ja-sung confirmed to appear in 'Desire'...]. Sports Chosun (??????????). Naver . ??????????? July 16, 2021 .
↑ Son Jin-ah (August 6, 2021). "한채영·이지훈·지이수·구자성 '欲望', 11月 26日 첫 放送確定" [Han Chae-young, Lee Ji-hoon, Ji I-soo, and Koo Ja-seong's 'Desire' to premiere on November 26]. MK Sports (??????????). Naver . ??????????? August 6, 2021 .