KTRENZ Hype Index
How much buzz is around LIGHTSUM?
56/100
- Coverage momentum
- AI attention
- Upcoming activity
- 46
- 81
- 40
The KTRENZ Hype Index (0–100) blends up to five live signals — KTRENZ editorial coverage momentum over the last 30 days (25%), AI-retrieval attention on the artist (20%), upcoming scheduled activity (15%), external demand from Naver search and YouTube traction (25%), and third-party SNS posts anchored to the act’s releases in the last 30 days (15%) — each log-normalized against a fixed cap. The first three exist for every act. The last two require data we do not have for everyone: where a signal is not measured it is left out and the remaining weights are renormalized, so an act is never scored down for something we simply did not observe.
Quick answers
LIGHTSUM: your questions
How much buzz is around LIGHTSUM right now?
- LIGHTSUM's KTRENZ Hype Index is 56/100 — a live score blending external search demand, KTRENZ coverage momentum, AI-retrieval attention, and upcoming activity.
When is LIGHTSUM's next comeback?
- LIGHTSUM's next release, Spoiler poster reveal at noon, is scheduled for 2026-10-22.
When did LIGHTSUM debut?
- LIGHTSUM debuted on 2024-09-23.
What is LIGHTSUM's latest release?
- Full-group M Countdown stage, first in ~2 years (2026-10-22).
Schedule
Upcoming LIGHTSUM dates
| Date | Event | Type |
|---|---|---|
| 2026-10-22 | Spoiler poster reveal at noon | release |
| 2026-10-22 | Full-group M Countdown stage, first in ~2 years | comeback |
Stories
Latest about LIGHTSUM
LIGHTSUM drops "Eotteoke (Doshite KR ver.)" MV teaser, first full-group Korean release in 2 years
LIGHTSUM dropped an MV teaser on Oct. 21 for their Korean rework of Japanese debut title track "Doshite," out Oct. 22.
KTRENZ Newsdesk · 14 hr ago
LIGHTSUM drops spoiler poster ahead of full-group M Countdown return, first in 2 years
Cube Entertainment teased something big on Oct 19. LIGHTSUM's six members will perform together on M Countdown on Oct 22—their first full-group stage in roughly
KTRENZ Newsdesk · 3 d ago
LIGHTSUM's Japan chart climb: new and old tracks both rising after 'Re' debut
LIGHTSUM's Japanese debut sent three older Korean tracks back onto Japan's YouTube Music chart on Oct. 13, joining the title track 'Doshite' at No. 28.
KTRENZ Newsdesk · 5 d ago
Hearts2Hearts and LIGHTSUM target Japan: debut single out, ABEMA documentary underway
Hearts2Hearts debuted in Japan last month with 'ICONIC HEART', a 3-track single. LIGHTSUM is releasing debut doc 'Re' on ABEMA after a 2-year hiatus.
KTRENZ Newsdesk · 9/18/2026
E'LAST's Won-jun and newcomer Kwon Yu-jung lead 'Subscribe Romance Season 2,' premiering Sept. 18
The short-form web drama returns September 18, 2026 with two new leads picked through open auditions.
KTRENZ Newsdesk · 9/14/2026
Sourced timeline
LIGHTSUM timeline
Auto-compiled from KTRENZ coverage. Latest event 2026-10-22.
- 2026-10-22release
Spoiler poster reveal at noon
A spoiler poster reveal is scheduled for October 22 at 12:00 PM, with details of what is being announced not yet disclosed.
Source: bntnews.co.kr - 2026-10-22comeback
Full-group M Countdown stage, first in ~2 years
All six LIGHTSUM members will perform together on Mnet M Countdown on October 22, their first complete-group music broadcast stage in approximately two years.
Source: bntnews.co.kr - 2024-12-28tour
Re:idol SHOWCASE at Spotify O-EAST in Tokyo
LIGHTSUM held their first showcase at Spotify O-EAST in Tokyo as part of their ongoing activities in Japan.
Source: mk.co.kr - 2024-10-22comeback
Full-group return on M Countdown
LIGHTSUM performs together as six members on M Countdown for the first time in approximately two years.
Source: bntnews.co.kr - 2024-10-22release
Eotteoke (Doshite KR ver.) digital single release
LIGHTSUM released the Korean rework of their Japanese debut title track Doshite, marking their first full-group Korean release in approximately two years.
Source: mk.co.kr - 2024-09-23release
Japanese debut mini-album 'Re' release
LIGHTSUM released their Japanese debut mini-album *Re* on September 23.
Source: stoo.com - 2024-09-23
- —hiatus
2-year hiatus period
LIGHTSUM went through a 2-year hiatus before their Japanese debut push.
Source: tvdaily.co.kr - —release
Debut documentary 'Re' released on ABEMA
LIGHTSUM began releasing their debut documentary 'Re' on ABEMA last month, documenting their preparation for Japanese debut.
Source: tvdaily.co.kr