Jayn Lee

Name: Jayn Lee
Native name: 제인 리
Also Known as: Lee Jae Yoon, 이재윤
Nationality: South Korean
Gender: Male
Born: August 16, 2000
Age: 26

Lee Jae Yun, known professionally as Jayn Lee, is a South Korean singer, dancer and former member of TO1 (티오원, formerly known as TOO). He attended Guam High School (in Daegu) but dropped out and later passed the High School Graduation Certification Examination.

He participated in Mnet's survival show, "World Klass" and was selected as part of the show's project group. He made his debut in April 2020 as TOO's leader and main vocalist with their first mini-album, "Reason for Being: 仁 (Benevolence)".

The group was originally represented by WAKEONE (웨이크원) and n.CH Entertainment (n.CH엔터테인먼트). However, in March 2021, n.CH decided not continue in this joint venture leaving WAKEONE as the sole agency managing the group. They decided to rebrand and changed the group's name to TO1.

In December 2023, all the members decided not to renew their contracts with the agency, effectively disbanding the group.

(Source: MyDramaList) Edit Biography

Year	Title	#	Role	Rating
2021	Nano Fighters LOKAPA Korean Drama, 2021, 13 eps Locapa Blue (Main Role)	13	Locapa Blue Main Role	0.0

Year	Title	#	Role	Rating
2023	Webtoon Singer Korean TV Show, 2023, 8 eps (Ep. 5) (Guest)	8	(Ep. 5) Guest	6.6
2022	Idol League Season 4 Korean TV Show, 2022, 10 eps (Ep. 5) (Guest)	10	(Ep. 5) Guest	0.0
2022	Jaechan's Dream Korean TV Show, 2022, 193 eps (Ep. 6, 89) (Guest)	193	(Ep. 6, 89) Guest	8.4
2022	Queendom Season 2 Korean TV Show, 2022, 10 eps (Ep. 3-4) (Guest)	10	(Ep. 3-4) Guest	7.6
2022	Adola School Season 3: PR on Idol Korean TV Show, 2022, 38 eps (Ep. 29) (Guest)	38	(Ep. 29) Guest	8.1
2021	Mama the Idol Korean TV Show, 2021, 8 eps (Ep. 1-2) (Guest)	8	(Ep. 1-2) Guest	8.0
2021	HIT Village: TO1 Korean TV Show, 2021, 1 eps (Regular Member)	1	Regular Member	8.2
2021	TO.1DAY Korean TV Show, 2021, 6 eps (Regular Member)	6	Regular Member	8.5
2021	Midnight Idol Season 2 Korean TV Show, 2021, 150 eps (Ep. 48) (Guest)	150	(Ep. 48) Guest	8.6
2021	TO1's Cider Korean TV Show, 2021, 6 eps (Main Host)	6	Main Host	8.1
2021	Welcome 2 House Korean TV Show, 2021, 6 eps (Regular Member)	6	Regular Member	8.4
2021	Night Brunch Japanese TV Show, 2021, 120 eps (Ep. 81) (Guest)	120	(Ep. 81) Guest	0.0
2020	Can You Hear My Trip Korean TV Show, 2020, 4 eps (Ep. 2) (Guest)	4	(Ep. 2) Guest	7.7
2020	Idol League Season 3 Korean TV Show, 2020, 66 eps (Ep. 34) (Guest)	66	(Ep. 34) Guest	8.4
2020	Too Mystery: Mafia Game Korean TV Show, 2020, 1 eps (Main Host)	1	Main Host	8.3
2020	Too Mystery: Dark Room Korean TV Show, 2020, 2 eps (Main Host)	2	Main Host	8.3
2020	Too Mystery: Zombie War Korean TV Show, 2020, 9 eps (Main Host)	9	Main Host	8.4
2020	Idol Dabang Season 3 Korean TV Show, 2020, 10 eps (Ep. 5) (Guest)	10	(Ep. 5) Guest	7.2
2020	Road to Kingdom Korean TV Show, 2020, 8 eps [Contestant] (Regular Member)	8	[Contestant] Regular Member	8.5
2020	Secret Friend of Idols Korean TV Show, 2020, 38 eps (Ep. 11-25) (Guest)	38	(Ep. 11-25) Guest	8.2
2020	Idol League Season 2 Korean TV Show, 2020, 23 eps (Ep. 18) (Guest)	23	(Ep. 18) Guest	7.7
2019	Transonglation Korean TV Show, 2019, 67 eps (Ep. 10, 21, 61) (Guest)	67	(Ep. 10, 21, 61) Guest	8.3
2019	To Be World Klass Korean TV Show, 2019, 10 eps [Contestant] (Regular Member)	10	[Contestant] Regular Member	7.9
2019	Tingle Interview Korean TV Show, 2019, 68 eps (Ep. 47) (Guest)	68	(Ep. 47) Guest	8.4
2019	Midnight Idol Korean TV Show, 2019, 345 eps (Ep. 161, 166, 171, 176, 238, 275, 343) (Guest)	345	(Ep. 161, 166, 171, 176, 238, 275, 343) Guest	8.2
2018	Mafia Dance Korean TV Show, 2018, 26 eps (Ep. 13) (Guest)	26	(Ep. 13) Guest	8.2
2016	Fact iN Star Korean TV Show, 2016, 200 eps (Guest)	200	Guest	8.2
2015	King of Mask Singer Korean TV Show, 2015, 525 eps [Contestant] (Ep. 384-385) (Guest)	525	[Contestant] (Ep. 384-385) Guest	8.0
2013	After School Club Korean TV Show, 2013, 671 eps (Ep. 442-528) \| [Guest] (Ep. 432, 445, 473, 499) (Main Host)	671	(Ep. 442-528) \| [Guest] (Ep. 432, 445, 473, 499) Main Host	7.8

Top 12 upcoming dramas on every fan's watchlist

Editorials - Sep 19, 2026

From highly anticipated adaptations to gripping thrillers, the upcoming drama lineup has something for every fan. With teasers already dropping, these 12 dramas are generating plenty of buzz even before their premieres. Here are the titles to keep on your