ARTIST • FORMER i-dle MEMBER
SOOJIN
Seo Soojin helped define i-dle’s original six-member performance identity, disappeared from the group during one of K-pop’s messiest allegation cycles, and then rebuilt herself as a solo artist without pretending the missing years never happened.

Profile
| Stage name | SOOJIN (수진) |
|---|---|
| Birth name | Seo Soojin (서수진) |
| Born | March 9, 1998 |
| Nationality | South Korean |
| Roles | Solo singer and dancer; former i-dle vocalist and main dancer |
| Group history | i-dle, 2018–2021 |
| Solo debut | 2023, with the EP AGASSY |
| Western zodiac | Pisces |
| Chinese zodiac | Earth Tiger |
| Official CVM routes | Artist shelf and Former Member shelf |
SOOJIN is not only an ex-member footnote. She qualifies for the Artist shelf because she has released solo music under her own name. Her history with i-dle remains essential, but her identity did not stop in August 2021.
Before debut
Soojin trained for years before i-dle’s debut and was briefly attached to the pre-debut group VIVIDIVA. That project did not become her public launch. She eventually joined Cube Entertainment, where the combination of controlled movement, low-register vocal color, and unusually camera-aware facial performance made her a natural fit for the company’s new self-producing girl group.
She was never the member who filled every silence with chatter. Her public image was quieter and more reserved offstage, which made the switch under stage lights more noticeable. The contrast became part of her appeal: shy in interviews, exact and magnetic when the choreography began.
2018–2021: building i-dle as six
i-dle debuted in May 2018 as Miyeon, Minnie, Soyeon, Soojin, Yuqi, and Shuhua. Soyeon’s authorship gave the group a creative spine, but the early performance language belonged to all six. Soojin supplied a kind of tension the group used repeatedly: economical gestures, a steady gaze, and movement that looked deliberate rather than busy.
Across the group’s first three years, she became one of its most recognizable dancers and one of the members most frequently associated with sensuality in performance. That label can flatten her if it is treated as the whole story. Her real strength was control. She could make a small shoulder movement read as clearly as a large formation change, and she understood when stillness would pull more attention than another count of choreography.
The six-member period matters historically. Erasing Soojin from the group’s profile makes the early catalog look as if it appeared fully formed with five people. It did not. The current five members carried i-dle forward, but the original sound, formations, chemistry, and fan memory were built by six.
2021–2022: allegations, hiatus, departure, and the legal ending
In February 2021, anonymous and named accusers alleged that Soojin had bullied classmates during middle school. She denied the central accusations, acknowledged some adolescent behavior she regretted, and asked for the claims to be examined individually rather than bundled together. Cube Entertainment announced a hiatus in March while statements, counter-statements, and online evidence spread faster than any formal process could resolve them.
On August 14, 2021, Cube announced that Soojin had left i-dle. The group continued with five members. In March 2022, the company terminated her contract. Her lawyer’s final September 2022 statement said the available evidence did not allow the substantive facts to be established through legal proceedings. Police also declined to forward the defamation complaint against an accuser because they did not find sufficient basis to conclude the statements were knowingly false.
The distinction matters because the internet often rewrites the ending in whichever direction serves the argument. The public record is more frustrating: conflicting accounts, insufficient evidence for a defamation prosecution, no trial establishing the underlying accusations, and a career-altering corporate decision made before the uncertainty was resolved.
2023–present: the solo rebuild
AGASSY
Soojin returned in 2023 as a solo artist with the EP AGASSY. The project did not imitate i-dle or stage a noisy revenge speech. It centered elegance, Korean visual motifs, restrained vocals, and the same controlled performance quality that had always been her clearest signature. The debut mattered because it reintroduced her as an active musician rather than a frozen controversy.
RIZZ and “MONA LISA”
The 2024 EP RIZZ pushed the presentation toward sharper confidence. “MONA LISA” framed attraction as something observed and controlled, a useful match for an artist whose face and movement had always done as much storytelling as her vocal line.
“BADITUDE”
“BADITUDE” made the self-possession louder. Red hair, a heavier performance edge, and a title built from “bad” and “attitude” turned the comeback into a declaration without requiring her to narrate the old scandal in every chorus. Read the full RaeRae Reacts review of the official “BADITUDE” music video.
Her solo catalog qualifies her for the Artist shelf. The Former Member shelf explains where she came from; the Artist shelf documents what she made after leaving.
Voice, dance, and camera language
Soojin’s voice sits comfortably in a lower, breathier register than the brighter tones often placed around her. She is not a power belter, and treating volume as the only measure of singing misses what her parts are designed to do. She adds texture, intimacy, and transition.
Dance remains the center of her artistry. Her movement favors line, weight transfer, and timing. She rarely looks as if she is racing the beat. Instead, she lets a gesture finish, then uses her eyes and posture to bridge into the next one. That is why fancams became such a major part of her reputation: the performance survives without an edit telling the viewer where to look.
As a soloist, that restraint has become both an advantage and a challenge. A group formation can frame one controlled performer against five contrasting energies. A solo stage requires her to generate the entire arc herself. Her releases have gradually increased the aggression and scale around her while preserving the precision that made her distinctive.
Career timeline
2018: debut and immediate attention
i-dle debuted with a concept that depended on individual identities remaining legible inside the group. That suited Soojin. Her role was not to overpower Soyeon’s rap, Minnie’s tone, Miyeon’s clarity, Yuqi’s depth, or Shuhua’s developing presence. It was to create contrast. In the group’s early stages, she often occupied the visual hinge between sharper choreography and a more languid, character-driven performance style.
The debut year established a pattern that would follow her: casual viewers noticed the styling, while repeat viewers noticed the precision. Her lines were usually compact, but she made transitions memorable. That ability is easy to underestimate in a profile built only from line counts. K-pop performance is not a spreadsheet. A member can change the temperature of a chorus without singing its longest section.
2019: darker concepts and stronger identity
As i-dle moved through darker and more theatrical material, Soojin’s controlled expressions became increasingly central to the group’s visual storytelling. She was especially effective in concepts that required ambiguity rather than a single cheerful or aggressive emotion. Her performances could look inviting and distant at the same time, which gave directors more to work with in close-up shots.
This era also intensified the fan-cam culture around her. Individual performance videos circulated because they showed details group edits could miss: how she finished her hands, where she placed her weight, and how rarely her face went blank between assigned camera moments. Those details are labor, not magic. They come from repetition and an understanding of how choreography reads through a lens.
2020: global exposure during a closed world
The pandemic disrupted the normal touring route just as i-dle’s international audience was expanding. Travel stopped, concerts shifted online, and artists had to sell scale through screens. For a performer as camera-literate as Soojin, that environment still allowed her strengths to register. But it also meant the original six did not receive the ordinary touring years that might have solidified the lineup through shared live experience.
COVID is relevant to the later story because the group’s crisis did not arrive after a normal cycle of rest. It landed while the industry was already unstable, fans were living online, and every accusation could be copied, translated, and amplified before institutions produced answers. The members then had to rebuild group momentum under those conditions.
January 2021: I Burn as the final six-member era
I Burn now carries two histories at once. At release, it was a carefully sequenced winter breakup record discussed by all six members as an emotional progression. In hindsight, it became the last Korean group release with Soojin in the lineup. That later knowledge changes how fans hear and watch the era, even though the album was not created as a farewell.
The six-member interviews from the period are important evidence against the lazy idea that Soojin was never part of the group’s emotional architecture. The members talked about living together, understanding one another, and translating shared empathy into the album. None of that predicts what happened weeks later. It does establish that the lineup’s history cannot be rewritten as a temporary casting mistake.
The allegation record without fandom mythology
The first responsibility of a useful profile is to separate dates, claims, and outcomes. Online arguments often compress the entire case into one sentence: either “she was proven guilty” or “she was completely proven innocent.” Neither sentence accurately describes the public legal record.
Accusers described harmful school behavior. Soojin denied the central bullying allegations and challenged several specific claims. Actress Seo Shin Ae later made public statements about verbal abuse during the same school period, although the dispute over direct interaction remained contested. Cube and Soojin pursued a complaint alleging false information. Police did not forward the case against an accuser because the evidence did not establish that the statements were knowingly false.
That police decision matters, but its meaning has limits. A refusal to prosecute an accuser for defamation is not a criminal judgment that every underlying allegation occurred exactly as described. It means the high bar for treating the accuser’s speech as criminally false was not met. Soojin’s lawyer later explained that the years that had passed and the lack of additional evidence made it difficult to establish the substantive facts through litigation.
The school-discipline record added another complication. Her legal statement said she had not been found guilty by the school violence committee in the matter described and had also experienced bullying from older students. Again, that does not automatically answer every interpersonal claim. It shows why the case resists the clean guilty-or-innocent graphic that social media wanted.
The corporate outcome was much cleaner than the evidence: hiatus, departure, contract termination. That imbalance is the core editorial question. K-pop companies can decide that uncertainty itself is commercially intolerable. Once they do, the artist absorbs the punishment even when the factual dispute remains unresolved.
Solo discography guide
| Release | Year | Why it matters |
|---|---|---|
| AGASSY | 2023 | Her formal return and first solo EP, built around elegance, restraint, and Korean-inspired visual detail. |
| RIZZ | 2024 | A more confident second chapter that widened the production while keeping performance and visual control at the center. |
| “BADITUDE” | 2025 | A louder, sharper self-definition and the clearest CVM Sekai entry point into her post-group stage identity. |
A discography table cannot show the full difficulty of the rebuild. A returning idol needs songs, choreography, styling, distribution, promotion, and a public willing to look at the work instead of only the scandal headline. Each release therefore functions as both music and proof of continued professional life.
Her solo career also changes how the site should categorize her. “Former member” describes a relationship to i-dle. “Artist” describes an active body of work. One label cannot replace the other, and neither should be hidden because the biography is uncomfortable.
Frequently asked questions
Was Soojin an original member of i-dle?
Yes. She debuted with Miyeon, Minnie, Soyeon, Yuqi, and Shuhua in May 2018 and remained part of the lineup until Cube announced her departure on August 14, 2021.
Was she legally proven guilty of school bullying?
No court judgment established that simplified conclusion. The defamation complaint against an accuser was not forwarded for prosecution, and the later legal statement said the substantive facts could not be established through the available process. That is not the same as a trial verdict proving the allegations.
Was she legally proven innocent of every allegation?
No. The available process also did not produce a sweeping judicial exoneration. Accurate reporting must preserve the unresolved nature of the record instead of upgrading a fandom conclusion into a court finding.
Why did she leave the group?
Cube announced the departure after months of public allegations and hiatus. The company did not publish a detailed evidentiary ruling. The practical reason was the unresolved controversy and the commercial pressure surrounding it.
Why is she on the Artist shelf?
Because she debuted as a solo artist and released music under her own name. CVM Sekai’s rule is simple: a member becomes eligible for the Artist shelf after an actual solo release. Soojin meets that requirement.
Can the current five-member group and the six-member history both be respected?
Yes. The five members’ survival and success do not require pretending Soojin never existed. Respecting Soojin’s contributions does not require denying the work the current lineup performed to rebuild. A useful archive can hold both truths without turning either side into a weapon.
Zodiac Side Quest
Pisces: fan astrology describes Pisces performers as intuitive, emotionally porous, visually imaginative, and more comfortable communicating through mood than blunt explanation. That description fits the public contrast between Soojin’s reserved interviews and expressive stages, but it is entertainment, not evidence.
Earth Tiger: the Tiger is associated with independence, nerve, and refusal to stay small; the Earth element is supposed to add patience and practicality. If astrology wanted to write a comeback story, “quiet person survives a public collapse and returns under her own name” is almost suspiciously on the nose.
RaeRae coverage and connected reading
YouTube tracking history
AGASSY – official music videoDaily gain: baseline collection pending | Total views: 18MWatch official videoDaily+1.6KTotal views18.3M
BADITUDE – official music videoDaily gain: baseline collection pending | Total views: 8.4MWatch official videoDaily+2.4KTotal views8.6MSources
- Soompi, March 19, 2021: Soojin’s detailed response and Cube’s legal-action announcement.
- Soompi, September 8, 2022: the final legal statement and explanation of why the case would not continue.
- NME, September 8, 2022: English-language reporting on the legal outcome.
- Teen Vogue, January 2021: six-member discussion of I Burn, friendship, and shared empathy.