ONF: Members, Music, History and Current Group Guide
Group profile and current lineup
| Current members | Hyojin, E-Tion, Seungjun, Wyatt, Minkyun and Yuto |
|---|---|
| Former member | Laun |
| Current company | KI Entertainment |
| Debut | August 3, 2017 |
| Current status | Active six-member group; U now promotes as Yuto |
| Fandom | FUSE |
Current six: Hyojin, E-Tion, Seungjun, Wyatt, Minkyun and Yuto. Former member: Laun. Now under KI Entertainment with the ONF name and IP intact.
Bottom line
ONF is a six-member group consisting of Hyojin, E-Tion, Seungjun, Wyatt, Minkyun and Yuto. They debuted under WM Entertainment in August 2017 as seven; Laun left in August 2019. In March 2026, all six signed with KI Entertainment, which acquired the ONF trademarks and intellectual property, and U changed his stage name to Yuto.
That last sentence matters because older profiles now fail in three different ways at once: wrong agency, outdated stage name and no explanation of how the group kept its identity after leaving WM.
ON and OFF were built into the concept
The group name combines opposing states, and the original structure divided members into vocal-focused ON Team and performance-focused OFF Team. The concept works best as an exchange of skills rather than a permanent wall.
Hyojin and Seungjun carry leadership roles across those sides, while the six-member group repeatedly proves that voice and movement cannot be filed into separate rooms during an actual performance.
Seven-member beginning and Laun’s departure
ONF debuted with Hyojin, E-Tion, J-Us, Wyatt, MK, U and Laun. WM announced in August 2019 that Laun had left the group and terminated his contract for personal reasons.
The site states the limited official fact and stops. It does not turn speculation about a private exit into biography. Laun keeps cards only for exact work in which he participated.
Why and the six-member reset
“Why,” released after the lineup change, gave six-member ONF a darker emotional engine and made the group’s detailed science-fiction visual language feel attached to a real question about destructive attachment.
The reset did not erase the debut era. It established which people would carry the next one.
Road to Kingdom changed visibility
ONF’s 2020 Road to Kingdom run demonstrated arrangement intelligence, theatrical pacing and the ability to rebuild familiar material without flattening it into louder percussion.
The exposure mattered, but the durable gain was a clearer public understanding that ONF’s brightness was composed with unusual care.
Beautiful Beautiful and the joy machine
“Beautiful Beautiful” turned optimism into architecture: layered voices, electronic color and group movement that behaved as if delight could be engineered without becoming fake.
ONF’s bright work survives because melancholy, friction and exact musical structure remain underneath the invitation.
The collective military decision
Five Korean members enlisted within days of one another in December 2021 so the group’s long hiatus could be compressed. Yuto, as the Japanese member, did not share that service obligation.
The decision should not be romanticized into proof that every group must do the same. It was a specific strategy with personal cost, and it made a coordinated post-service return possible.
Storage of ONF kept a light on
The group prepared the 2022 special album before enlistment. Releasing recorded material during service preserved a connection without pretending the members were actively promoting.
Pre-recording and present activity are different states. The archive dates both instead of using a release date to imply everybody was available.
Love Effect returned the six
After the five Korean members completed service, ONF returned in October 2023 with LOVE EFFECT. The release reintroduced group chemistry as lived continuity rather than a solemn reunion ceremony.
A hiatus ends more convincingly when a new song works on its own.
Bye My Monster
The April 2024 Beautiful Shadow title track samples the emotional sweep associated with the third movement of Rachmaninoff’s Second Symphony, then binds classical scale to band force, pop structure and a choreography that treats love like something beautiful enough to fear.
Wyatt holds a lyric credit beside longtime collaborator Hwang Hyun of MonoTree. All six current members participate in the exact playlist MV.
Why the monster hurts
The song’s monster is not a cheap creature reveal. It is the part of love that becomes destructive while remaining difficult to release. The performance keeps sincerity on the edge of melodrama through controlled voices and exact physical tension.
ONF commit. Half-ironic acting would collapse the entire structure.
ONF:MY IDENTITY and Summer Light
The first part of the second album arrived in February 2025, followed by the special single “Summer Light” in August. These releases moved the group beyond a single post-service comeback and widened the bridge toward the contract decision ahead.
Current profiles follow the full path, not only the one song that traveled furthest.
Leaving WM without losing ONF
WM announced the end of the members’ exclusive contracts in January 2026 while allowing group continuation. KI Entertainment then signed all six in March and acquired the ONF trademarks and IP after discussions with WM.
That is unusually clean continuity in an industry where leaving an agency can turn a group name into a locked room. The members entered the new company as creators with a stated larger role in planning and production.
Names changed because the people chose them
J-Us now promotes as Seungjun, MK as Minkyun, and U officially became Yuto in March 2026. Older releases still use the stage names printed at the time.
A canonical profile supports both search paths without creating duplicate people. Current headings use current names; historical prose preserves period-correct credits.
ONF:MY SELF is the current chapter
ONF released the second part of the second album, ONF:MY SELF, on June 17, 2026, led by “Open The Door.” The release arrived under KI Entertainment and reunited the group with the kind of member involvement and musical identity fans expect from ONF.
The hub image comes from that current official video, not from the exact 2024 React.
RaeRae take
ONF make maximal music feel emotionally precise. Their songs can hold robots, orchestral sweep, gospel lift, synth cities and full-body performance because the arrangement knows which feeling owns each turn.
“Bye My Monster” is the hard version of that gift: enormous without becoming empty, sincere without becoming embarrassed about sincerity.
Rant: an agency exit should not require identity amputation
KI acquiring the trademarks and IP allowed ONF to move as ONF. That sounds obvious until you remember how often artists build a name for years and then discover the sign above the door belongs more securely to the company than to the people audiences came to see.
The industry needs predictable transfer and licensing standards. A group should not have to win a legal scavenger hunt merely to continue introducing itself.
Image-card standard
Every human image is a real local media attachment with source attribution, metadata and a unique featured/hero/social assignment.
Static cards stay readable across dark orchestral imagery and bright electronic color. No reused feature images and no infinite horizontal carousel.
Member directory
- Hyojin — current member; vocal leader.
- E-Tion — current member; vocalist.
- Seungjun — current member; OFF Team leader, vocalist and dancer.
- Wyatt — current member; rapper and dancer.
- Minkyun — current member; vocalist and rapper.
- Yuto — current member; dancer, vocalist, rapper and maknae.
- Laun — former member; former member and dancer.
Origin: a South Korean group built in two circuits
ONF debuted in South Korea under WM Entertainment on August 2, 2017. The name means “On and Off,” and the original structure divided the seven members into ON and OFF teams: one emphasizing vocals, the other performance. The device gave a large rookie group an internal map, but the music worked because the circuits connected rather than behaving like separate subunits.
Laun’s departure in August 2019 changed the lineup to six. The group later retired J-Us and MK as stage names in favor of Seungjun and Minkyun, and U began using Yuto in the 2026 agency chapter. Those naming changes belong in search aliases, not duplicate profiles. One human keeps one canonical record across every credited era.
Hyojin makes “ON” more than a label
Hyojin leads the ON team and gives ONF its clearest melodic center. His voice can lift a chorus without making it feel imported from a different song, which matters in production famous for sudden turns and dense emotional architecture. The brightness carries urgency rather than simple sweetness.
After the move to KI Entertainment, that continuity becomes practical leadership. A new company can preserve the name and trademark while still changing staff, schedules and creative processes. Hyojin helps the six sound like the same group without requiring every future record to reproduce the WM era.
E-Tion gives precision a nervous edge
E-Tion’s tone and performance detail suit ONF’s mix of clean pop and emotional unease. He can make a melodic line feel slightly unsettled, which is often where the group’s science-fiction imagery becomes human. A perfect synthetic world needs someone who sounds aware of the crack.
His role also demonstrates why position lists are insufficient. Vocal contribution, visual timing and how a member changes the temperature of a transition are different kinds of labor. E-Tion connects them without needing a biography to call him an all-rounder and move on.
Seungjun turns choreography into character
Seungjun, formerly promoted as J-Us, leads the performance side and gives ONF choreography a recognizable snap. His expressions and timing can make elaborate lore feel playful rather than self-important. That is a crucial skill for a group whose videos are willing to build robots, parallel selves and collapsing worlds around a pop hook.
The legal-name change did not create a new member. Historical videos remain credited to J-Us where that was the public name; current pages lead with Seungjun and preserve the alias. Search continuity should be boring even when the concept is not.
Wyatt gives the system weight
Wyatt’s lower rap tone supplies weight inside ONF’s bright and frequently airborne production. He can ground a verse without turning the song into a compulsory hard section. The contrast makes the next vocal rise feel physical rather than merely higher.
His scale onstage also helps the group’s exact formations remain readable. ONF choreography often moves quickly between whimsy and force. Wyatt can anchor both without performing masculinity as a permanent scowl, which keeps the group’s emotional range open.
Minkyun makes production feel personal
Minkyun, formerly MK, brings a distinct vocal grain and creative interest that keeps ONF’s polished records from feeling sealed. His tone can sound playful, urgent or strangely intimate depending on where the arrangement places it. The texture is one reason ONF remains identifiable across genre changes.
Like Seungjun, he keeps one canonical profile across the stage-name change. Credits published under MK remain historically correct. Current pages use Minkyun. An alias is metadata, not permission to clone a person and split his catalog.
Yuto carries the international and performance bridge
Yuto, previously promoted as U, is the group’s Japanese member and a central dancer. His movement has unusual elasticity, letting ONF shift from mechanical precision to a looser emotional release without breaking the formation. Language access is part of his route, but it is not his entire contribution.
The 2026 public-name shift to Yuto belongs beside U in every search field. Japanese releases remain group releases credited to the participating lineup. One member’s nationality does not turn the branch into solo promotion or excuse incomplete credits for the other five.
Laun remains part of the seven-member beginning
Laun debuted with ONF and participated until his departure in August 2019. The public notice gave limited detail, and the archive does not turn that absence into a rumor puzzle. Current cards use six members. “ON/OFF,” “Complete,” “We Must Love” and other early releases retain the lineup that actually made them.
This is not a ceremonial footnote. Removing a former member from old credits makes the catalog less accurate and makes later six-member growth harder to understand. The transition is part of ONF’s history, not a flaw the database should conceal.
The military chapter became collective strategy
Five Korean members enlisted in a coordinated period beginning in late 2021, while Yuto remained active because he is Japanese. The decision compressed the group’s military hiatus and turned a common source of multi-year fragmentation into collective planning. It was still a real interruption, not a clever marketing stunt without personal cost.
“Your Song” and the post-service return gained weight because the members had chosen continuity together. The archive dates enlistments, discharges and releases without treating military service as proof of character. Strategy matters; private experience remains theirs.
Why ONF songs feel like worlds with exits
“Complete,” “We Must Love,” “Why,” “Beautiful Beautiful,” “Popping” and “Bye My Monster” demonstrate ONF’s gift for melodic architecture. The songs can be dense, theatrical and full of turns, but they usually preserve a route back to the hook. Complexity has an emotional purpose rather than serving as a producer’s puzzle.
The visual lore amplifies that quality through doubles, machines, travel and broken timelines. A React can follow those motifs without pretending every prop has one official answer. The music remains primary. Lore is most useful when it reveals why a chord change, formation or expression feels like memory.
Current status: six members at KI Entertainment
ONF currently consists of Hyojin, E-Tion, Seungjun, Wyatt, Minkyun and Yuto. In March 2026 all six signed with KI Entertainment after leaving WM Entertainment. KI stated that the ONF team name and identity would remain intact, giving the members a continuing foundation rather than forcing a rebrand.
The move closed the active Weverse service and changed the official communication route. It did not create a new group. Old WM-era releases, current KI schedules and the same six people belong to one hub. New official links replace stale service paths while preserved notices remain historical sources.
Fandom file: FUSE
FUSE is ONF’s official fandom name, describing fans as the fuse that connects the group’s ON and OFF circuits. The name survives the company change because it belongs to the group identity, not to a specific membership platform.
The Weverse FUSE membership and community services ended in February 2026 during the transition away from WM. Service closure is not fandom closure. The archive preserves those notices, points readers toward current KI channels and does not mislabel an expired platform as evidence the group disbanded.
Keeping the ONF trademark with the six members matters because a group name is working infrastructure: searchable history, audience trust, merchandise, performance rights and the connection between every old upload and the next release. KI’s commitment to preserve that identity prevents the company change from splitting one career into artificial “before” and “after” acts. The creative chapter can change without sacrificing ownership of the road that brought them there.
The six-member future remains connected to the seven-member beginning.
Official video tracker
The tracker follows exact official uploads from “ON/OFF,” “Complete” and “We Must Love” through “Why,” “Sukhumvit Swimming,” “Beautiful Beautiful,” “Popping,” “Your Song,” “Bye My Monster,” “The Stranger” and the KI Entertainment chapter. Each entry retains its date and credited lineup.
Japanese versions, performances and member originals remain connected but separate. React dates fall on release day or within three days. Stage-name changes never split one person’s tracker, and a company migration never resets the group’s chronology.
Sources and official links
- KI Entertainment announcement and ONF trademark continuity
- Official notice: ONF Weverse service ends in February 2026
- Official FUSE membership service closure notice
- ONF official YouTube archive
RaeRae Reacts
Bye My Monster: ONF Made Love Sound Like the Thing You Survive by Letting Go — exact playlist upload pOR8CUeTJpc.
React image cards
Static cards route each exact official upload to its own in-depth React. Every card repeats that React’s featured and hero image so the archive stays visually traceable.
