Wikimedia · CC BY 3.0ONEUS
Five-member K-pop group known for theatrical performance, concept-driven releases and music that frequently combines modern pop with Korean traditional imagery.
Profile
ONEUS debuted in January 2019 and currently consists of SEOHO, LEEDO, KEONHEE, HWANWOONG and XION. The group’s catalog includes “Valkyrie,” “LIT,” “LUNA,” “Same Scent,” “X,” “Grenade” and the 2026 Japanese single “Under.”
In February 2026, all five members signed exclusive contracts with B.Wave Entertainment. The company said it acquired the ONEUS-related intellectual property from RBW, allowing the group name and activities to continue under the new agency.
SEOHO remains an official member while serving in the military. The 2026 summer Under physical editions and active promotions centered on LEEDO, KEONHEE, HWANWOONG and XION. The official ONEUS Japan profile continues to list all five members.
In September 2026, the official Japanese site opened reservations for the group’s 12th EP FIRST LIGHT : 井. The fandom is known as TOMOON.
Members
Career Milestones & Group Honors
FIRST LIGHT : 井
Official reservations opened in September for the 12th EP, marking the next full-group album project.
Under
The Japanese fifth single Under was released on July 1 with four active members while SEOHO remained in military service.
Move to B.Wave Entertainment
All five members signed with B.Wave Entertainment, which acquired ONEUS-related IP from RBW.
Five-member solo single project
SEOHO, LEEDO, KEONHEE, HWANWOONG and XION each released an official solo single, giving every current member an individual music release.
LUNA and first music-show win
“LUNA” became a defining traditional-Korean-inspired release and brought the group its first music-show victory.
Debut with LIGHT US
ONEUS debuted with the first mini album LIGHT US and title track “Valkyrie.”
Official Videos by Year
Selected group videos, newest first.