Koo Se Mi
- Name: Koo Se Mi
- Native name: 구세미
- Also Known as: Koo Semi, Gu Se Mi, Gu Semi
- Nationality: South Korean
- Gender: Female
- Born: April 10, 2002
- Age: 24
She debuted in February 2020 as CIGNATURE's main vocalist and dancer with their first single, "Nun Nu Nan Na". Despite receiving positive reviews for their music, C9 Entertainment (C9엔터테인먼트) decided to disband the group in December 2024 after several discussions with each member so they could each pursue their own individual activities.
In January 2026, she re-debuted once again, but now as the bassist of LATENCY, an all-female rock band managed by Oddinary Records (오디너리 레코즈), with their first single "It Was Love".
On August 14, 2026, she terminated her contract with Oddinary Records, concluding her activities with LATENCY.
(Source: MyDramaList) Edit Biography
TV Show
| Title | Rating |
|---|---|
2024 Idol Star Athletics Championships Chuseok Special
Korean TV Show, 2024, 3 eps
(Regular Member)
|
7.7
|
Idol League Season 4
Korean TV Show, 2022, 10 eps
(Ep. 9)
(Guest)
|
0.0
|
Secret Airlines
Korean TV Show, 2022, 21 eps
(Ep. 17)
(Guest)
|
0.0
|
My Boyfriend Is Better
Korean TV Show, 2022, 7 eps
(Ep. 3-4, 6)
(Guest)
|
7.7
|
Gossip Idle
Korean TV Show, 2021, 75 eps
(Ep. 44)
(Guest)
|
8.2
|
Idol League Season 3
Korean TV Show, 2020, 66 eps
(Ep. 61)
(Guest)
|
8.4
|
Eungsu CINE
Korean TV Show, 2020, 579 eps
(Ep. 317)
(Guest)
|
6.0
|
Hidden Singer Season 6
Korean TV Show, 2020, 16 eps
[Panelist] (Ep. 14-15)
(Guest)
|
7.7
|
Lunch Attack
Korean TV Show, 2019, 570 eps
(Ep. 603)
(Guest)
|
6.0
|
After School Club
Korean TV Show, 2013, 671 eps
(Ep. 416, 443, 500, 559, 591)
(Guest)
|
7.8
|
Weekly Idol
Korean TV Show, 2011, 707 eps
(Ep. 482)
(Guest)
|
8.1
|
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