So Geon (NEXZ) Profile 2026: Age, Birthday & Interesting Facts
So Geon has a less typical route into K-pop than many young idols. Born on September 13, 2006, he grew up in Japan and later entered JYP Entertainment’s Nizi Project Season 2, the audition project created with Sony Music Entertainment Japan. He ultimately finished fourth in the final selection and became one of the seven members of NEXZ.
As of September 21, 2026, So Geon is 20 years old. His birthday was officially celebrated by NEXZ‘s Japanese official site on September 13, which described it as his 20th birthday.
His story also has a strong Korea-Japan connection. The Korea Times reported in 2025 that So Geon was born and raised in Japan while holding South Korean nationality. He also discussed working on his Korean after joining Nizi Project Season 2, making his cultural background a notable part of his journey with NEXZ.
Today, So Geon is part of a group that has expanded rapidly since its 2024 debut. NEXZ released SAUCIN’ in August 2026, following the group’s first arena tour and Asian showcase activities, putting So Geon into an increasingly busy third year as an active idol.
So Geon Quick Profile
| Detail | Information |
|---|---|
| Stage Name | SO GEON |
| Korean Name | 소 건 |
| Japanese Name | ソ ゴン |
| Birthday | September 13, 2006 |
| Age in 2026 | 20 |
| Zodiac Sign | Virgo |
| Nationality | South Korean |
| Birthplace | Tokyo, Japan |
| Group | NEXZ |
| Agency | JYP Entertainment |
| Debut | May 20, 2024 |
| Debut Release | Ride the Vibe |
| Survival Show | Nizi Project Season 2 |
| Final Ranking | 4th |
| Fandom | NEX2Y |
| Current Status | Active NEXZ member |
The September 13 birthday and 2006 birth year are confirmed by Sony Music’s official NEXZ profile and the group’s official birthday announcement. His Korean nationality and Japan upbringing were also discussed by The Korea Times.
Table of Contents
Who Is So Geon?
So Geon is a member of NEXZ, the seven-member boy group formed through Nizi Project Season 2. The group’s members are TOMOYA, YU, HARU, SO GEON, SEITA, HYUI and YUKI.
NEXZ was created through a collaboration between JYP Entertainment and Sony Music Entertainment Japan. Its name represents “Next Z(G)eneration,” reflecting the project’s concept of bringing together a new generation of performers.
So Geon’s path is particularly interesting because he represents the Korea-Japan connection at the heart of NEXZ. The Korea Times described him as a Korean national born and raised in Japan, and he has spoken publicly about improving his Korean-language skills after entering the audition program.
How Old Is So Geon in 2026?
So Geon is 20 years old in 2026.
He was born on September 13, 2006. He turned 20 on September 13, 2026, shortly before this profile’s September 21, 2026 update date. Sony Music’s official NEXZ profile lists September 13, 2006 as his date of birth, while the official NEXZ site specifically celebrated his 20th birthday on September 13, 2026.
His zodiac sign is Virgo based on his September 13 birthday.
So Geon’s Age Timeline
| Year | Age | Career milestone |
|---|---|---|
| 2006 | 0 | Born on September 13 |
| 2023 | 17 | Appeared on Nizi Project Season 2 |
| 2023 | 17 | Finished 4th in the final selection |
| 2024 | 17 | NEXZ made its global debut |
| 2025 | 18–19 | NEXZ expanded its Korean and Japanese activities |
| 2026 | 19–20 | Arena touring, Mmchk, Hellmate and SAUCIN’ |
| September 2026 | 20 | Celebrated his 20th birthday |
When Is So Geon’s Birthday?
So Geon’s birthday is September 13.
His complete date of birth is September 13, 2006. The official NEXZ birthday announcement in September 2026 confirmed that he turned 20 on that date.
His birthday is now particularly easy for fans to track because NEXZ’s official channels regularly publish member birthday content. In 2026, the official fan-club birthday event included a special So Geon-themed feature connected with GEONSKY.
Where Is So Geon From?
So Geon was born and raised in Japan, and The Korea Times specifically described Tokyo as part of his Japan-based upbringing while identifying him as a Korean national.
That background helped shape his experience on Nizi Project Season 2. In a 2025 interview, So Geon explained that J.Y. Park noticed his nationality during the audition and asked him to introduce himself in Korean. So Geon said he subsequently worked on his Korean by studying and communicating more with his parents and people around him.
This is one of the more meaningful parts of his biography because it shows that his Korean identity was not simply a label attached to his profile. It became part of the language and cultural adjustment he experienced while preparing for life as a JYP artist.
So Geon and Nizi Project Season 2
So Geon’s career changed dramatically through Nizi Project Season 2.
The program was a joint audition project by JYP Entertainment and Sony Music Entertainment Japan. NEXZ was created from the final lineup of the show, and So Geon was selected as one of the seven members.
He entered the competition under the name Ken, a name associated with his Japanese identity during the audition period. Later, the group introduced him officially as So Geon. Contemporary coverage of NEXZ’s debut identified him as the group’s Korean member and noted his fourth-place finish in the Nizi Project Season 2 finale.
The final selection was announced in December 2023. NEXZ then began pre-debut activity, including the release of “Miracle” on December 18, 2023. Sony Music identifies “Miracle” as the pre-release song performed at the final stage of the audition project.
So Geon’s NEXZ Debut
NEXZ officially made its global debut on May 20, 2024 with the single album Ride the Vibe.
The release contained the title track “Ride the Vibe” and the B-side “Starlight.” Sony Music’s official profile records May 20, 2024 as the group’s Korean global debut.
For So Geon, this marked the transition from survival-show contestant to working idol.
The debut was also significant for NEXZ as a group. The project combined JYP’s K-pop production system with Sony Music Entertainment Japan’s Japanese market infrastructure, giving the group a built-in Korea-Japan identity from the beginning.
NEXZ’s Early Growth
After Ride the Vibe, NEXZ continued expanding its catalog and performance schedule.
The group released the Japanese EP Ride the Vibe (Japanese Ver.) / Keep on Moving in August 2024 and the mini album NALLINA later that year. In 2025, NEXZ followed with O-RLY? and Beat-Boxer. Sony Music’s official chronology records these releases as part of the group’s progression from rookie act to a more established touring group.
This period also gave So Geon more opportunities to speak publicly about his role within the team.
During a 2025 interview with The Korea Times, he described “Beat-Boxer” as a song that matched the group’s reputation for strong performance. He also recalled receiving positive comments about NEXZ’s dancing from senior JYP artists Stray Kids.
So Geon and “Mmchk”
One of the notable stages of NEXZ’s 2026 career came with the release of the second single album Mmchk on April 27, 2026.
JYP’s official material described Mmchk as a project centered on NEXZ’s own identity and said the members participated in lyric writing. Sony Music later recorded May 6, 2026 as the date when NEXZ performed “Mmchk” on Show Champion and achieved the group’s first music-show No. 1.
So Geon also discussed the meaning of “Mmchk” during an April 2026 showcase. According to Aju Press, he described the word as a symbolic keyword representing NEXZ’s hope that people would naturally associate it with the group.
This was an important development in the group’s public identity: rather than simply presenting themselves as new JYP performers, NEXZ members were increasingly speaking about what they wanted NEXZ itself to represent.
So Geon in 2026: From Rookie to Touring Idol
2026 has been one of the busiest years of So Geon’s career so far.
NEXZ held its first arena tour, NEXZ LIVE TOUR 2026 “Hellmate,” with performances in Tokyo and Osaka in May and June. Sony Music subsequently listed Hellmate as the group’s third Japanese EP, released on June 24.
The group then moved into its Asian showcase period, visiting cities including Taipei, Hong Kong, Bangkok and Singapore. Bandwagon’s August 2026 interview described this period as a major opportunity for the seven members to meet NEX2Y across Asia.
So Geon personally recommended “Can’t hide” from Hellmate in that interview. He explained that the song offered a different side of NEXZ through its vocals and emotional theme.
So Geon and NEXZ’s SAUCIN’ Era
NEXZ released its fourth mini album SAUCIN’ on August 24, 2026.
JYP’s official website confirms the August 24 release date, while Sony Music describes SAUCIN’ as the latest Korean release in the group’s chronology.
Before the album’s release, NEXZ performed the title track at KCON LA 2026, giving international audiences an early look at the comeback. The performance took place in Los Angeles ahead of the album’s official release.
The SAUCIN’ period also coincided with So Geon’s 20th birthday, making September 2026 a notable point in his career.
What Is So Geon’s Role in NEXZ?
JYP Entertainment’s official profile confirms So Geon as a member of NEXZ, but it does not currently list a formal individual position beside his name.
Some third-party K-pop databases describe him as a vocalist, but for a fact-checked profile it is better not to turn database labels into an official company designation.
What is publicly clear from interviews is that So Geon contributes to NEXZ’s performance identity and has increasingly participated in the group’s music-related conversations. In 2025, he discussed the performance character of “Beat-Boxer,” while NEXZ’s official material for Beat-Boxer confirmed that all members contributed lyrics to “Next To Me.”
Does So Geon Write Songs?
There is evidence of So Geon’s growing involvement in NEXZ’s songwriting.
JYP’s official Beat-Boxer release information states that all NEXZ members participated in writing the lyrics for “Next To Me.” The song was included on the group’s third mini album.
JYP Publishing also maintains an artist page for SO GEON identifying him as a lyricist/composer and listing NEXZ’s “Beat-Boxer” among his catalog information.
That gives So Geon a documented connection to the creative side of NEXZ rather than limiting his career to performing songs written entirely by outside teams.
So Geon’s Personality and Public Image
So Geon’s public image has developed around his relaxed, playful presence and his ability to bring a different background into the NEXZ lineup.
Rather than making unsupported claims about his private personality, the strongest evidence comes from his own interviews and public content. His 2025 Korea Times interview shows a member who speaks openly about his Korean-language development and his experience moving between Japan and Korea.
He has also become more comfortable discussing NEXZ’s music. His comments about “Beat-Boxer” and his recommendation of “Can’t hide” show him talking not only as a performer but also as someone engaged with how NEXZ’s songs communicate different moods.
So Geon’s Interests
Some personal interests have been publicly associated with So Geon through member content and profile interviews, particularly sports and photography.
Football and table tennis are frequently listed among his interests in public NEXZ-related profiles. Photography is another recurring detail associated with him, with his camera described as one of his favored personal items. These details come primarily from member-content compilations rather than JYP’s formal profile, so they are best treated as fan-interest facts rather than central biographical information.
His public activities also show an interest in fashion and visual presentation, including appearances connected with fashion and beauty events. ORICON, for example, documented So Geon appearing with HARU at a 2026 YSL-related event.
So Geon and Fashion
Fashion is increasingly part of So Geon’s public career rather than merely a fan-observed interest.
NEXZ’s promotional campaigns have regularly used different visual concepts, from the industrial styling of “Ride the Vibe” to the more experimental aesthetics of later releases.
In 2026, So Geon also appeared alongside HARU at the YSL LOVENUDE HOTEL TOKYO SECRET CHECK-IN event, according to ORICON’s coverage.
Still, there is not enough reliable public information to publish a definitive list of So Geon’s personal favorite brands, private wardrobe purchases or luxury collection. Those details should not be presented as facts without direct confirmation.
So Geon’s Language and Cultural Background
So Geon’s Korea-Japan background is one of the clearest defining elements of his biography.
He was born and raised in Japan but is a Korean national. During his interview with The Korea Times, he discussed the gap between his Korean identity and his Korean-language ability when he entered Nizi Project Season 2. He said he later worked on the language by studying and speaking more with his parents and people around him.
That experience makes him a distinctive member of NEXZ, a group intentionally built around the connection between Korean and Japanese entertainment markets.
So Geon’s Family and Private Life
So Geon has occasionally been discussed in fan-created profile material in relation to his family, but detailed family information is not a necessary part of understanding his professional biography.
For KpopBio’s fact-focused profile, private details such as home address, private family occupations, personal financial information and other non-public matters should not be presented unless they have been clearly shared through reputable public sources.
Likewise, there is no reliable public basis here for stating a romantic relationship, private residence, personal wealth or other sensitive personal details as fact.
So Geon Height and Weight
So Geon’s official height and weight have not been published on JYP Entertainment’s official NEXZ profile.
That means unofficial numbers circulating on profile websites should not be treated as confirmed statistics.
For a profile intended to remain accurate over time, leaving those fields unconfirmed is better than filling them with an estimated measurement.
So Geon’s MBTI
MBTI information associated with So Geon has changed in third-party profile databases over time, with older listings commonly giving INFP and newer listings giving ENFP.
Because personality-type information can change and JYP’s official profile does not currently publish an MBTI result, KpopBio should not present either label as an official permanent fact. The most accurate wording is that different public profile sources have reported different MBTI types.
Interesting Facts About So Geon
1. He turned 20 in September 2026
So Geon celebrated his 20th birthday on September 13, 2026, according to the official NEXZ website.
2. He was born in Japan but is Korean
The Korea Times reported that So Geon was born and raised in Japan and is a Korean national.
3. He competed on Nizi Project Season 2
The survival program created the seven-member NEXZ lineup through JYP and Sony Music’s joint audition project.
4. He finished fourth in the final selection
Contemporary coverage of NEXZ’s debut identified So Geon as the fourth-place finalist from Nizi Project Season 2.
5. He was initially introduced as Ken
During the audition period, So Geon was introduced under the name Ken before officially debuting under the name So Geon.
6. His Korean improved after joining the audition program
So Geon has publicly discussed working to improve his Korean after J.Y. Park asked him to introduce himself in Korean during the audition process.
7. He has participated in lyric writing
NEXZ’s official Beat-Boxer information states that all members contributed lyrics to “Next To Me.”
8. He has talked about NEXZ’s performance identity
When discussing “Beat-Boxer,” So Geon explained the track in terms of the group’s performance-focused image.
9. His 2026 schedule has included arena touring
NEXZ’s first arena tour, Hellmate, included Tokyo and Osaka dates in May and June 2026.
10. He recommended “Can’t hide”
During Bandwagon’s August 2026 interview, So Geon chose “Can’t hide” from Hellmate as the song he would recommend to someone discovering the EP.
So Geon’s Career Timeline
| Date | Event |
|---|---|
| September 13, 2006 | So Geon is born |
| 2023 | Competes on Nizi Project Season 2 |
| December 15, 2023 | Selected in the final NEXZ lineup |
| December 18, 2023 | NEXZ releases pre-release song “Miracle” |
| May 20, 2024 | NEXZ makes global debut with Ride the Vibe |
| August 21, 2024 | NEXZ makes its Japanese debut |
| November 18, 2024 | NALLINA released |
| April 28, 2025 | O-RLY? released |
| October 27, 2025 | Beat-Boxer released |
| April 27, 2026 | Mmchk released |
| May 6, 2026 | NEXZ earns its first music-show No. 1 with “Mmchk” |
| May–June 2026 | First NEXZ arena tour, Hellmate |
| June 24, 2026 | Hellmate released |
| August 24, 2026 | SAUCIN’ released |
| September 13, 2026 | So Geon turns 20 |
| September 14, 2026 | NEXZ announces first Asia tour, SAUCIN’ THE WORLD |
The major release and touring dates above are documented by Sony Music, JYP Entertainment and NEXZ’s official notices.
So Geon and NEX2Y
NEX2Y is the official global fandom name for NEXZ. JYP’s official website announced recruitment for the NEX2Y second generation in February 2026, confirming the continued use of the fandom name.
For So Geon, the connection with fans has become increasingly visible through birthday content, touring and international showcases.
During NEXZ’s 2026 Asia showcase period, Bandwagon noted that the members had performed in several Asian cities and spoke about the energy they received from meeting NEX2Y in different countries.
What Is So Geon Doing Now in 2026?
As of September 21, 2026, So Geon remains an active member of NEXZ.
The group’s most recent Korean release is SAUCIN’, released on August 24. Official NEXZ notices also show that the group has moved into preparations for its first Asia tour, NEXZ 1ST ASIA TOUR “SAUCIN’ THE WORLD.”
The September 2026 notice confirms the Seoul leg of the tour, while additional official announcements are part of NEXZ’s current schedule.
This gives So Geon a busy 2026 calendar following his 20th birthday, with NEXZ moving from arena touring into another international stage of its career.
What Has Not Been Officially Confirmed About So Geon?
A useful profile should also make clear where the public record ends.
There is no reliable official source in the material reviewed for a confirmed height, weight, personal net worth, private home, car collection, relationship status, detailed daily routine or private investment portfolio.
Likewise, fans may encounter many claims about favorite products, exact family details, school history or personality tests on profile sites and social media. Unless those details can be traced to a direct public statement or reputable source, they should be treated cautiously.
That approach keeps a So Geon profile useful without turning fan speculation into biography.
Why So Geon’s Story Stands Out
So Geon’s biography is interesting because it crosses several boundaries at once.
He entered NEXZ through a Japan-Korea audition project, grew up in Japan while holding Korean nationality, worked on his Korean-language ability during his path to debut, and eventually became part of a group managed through JYP Entertainment and Sony Music’s partnership.
His career has also developed quickly. Within two years of debuting, he had participated in several NEXZ releases, spoken publicly about the group’s music, contributed to lyrics, performed at large-scale events and taken part in international touring.
That makes his 2026 profile less about a list of basic statistics and more about watching an idol’s role evolve as the group itself matures.
FAQs About So Geon
1. How old is So Geon in 2026?
So Geon is 20 years old as of September 21, 2026. He turned 20 on September 13, 2026.
2. When is So Geon’s birthday?
So Geon’s birthday is September 13, 2006.
3. What is So Geon’s zodiac sign?
His zodiac sign is Virgo, based on his September 13 birthday.
4. Is So Geon Korean?
Yes. The Korea Times reported that So Geon is a Korean national who was born and raised in Japan.
5. Where was So Geon born?
Public profile sources identify Tokyo, Japan as his birthplace, while The Korea Times confirms that he was born and raised in Japan.
6. Is So Geon a member of NEXZ?
Yes. So Geon is one of the seven members of NEXZ alongside TOMOYA, YU, HARU, SEITA, HYUI and YUKI.
7. When did So Geon debut?
So Geon debuted with NEXZ on May 20, 2024, through the single album Ride the Vibe.
8. What was So Geon’s name on Nizi Project?
He was initially introduced under the name Ken during the audition period and later promoted officially as So Geon.
9. What was So Geon’s final rank on Nizi Project Season 2?
He finished fourth in the final selection.
10. Is So Geon the only Korean member of NEXZ?
Major coverage has described So Geon as the Korean member of NEXZ, while the other six members are Japanese.
11. What is So Geon’s agency?
So Geon is an artist under JYP Entertainment as a member of NEXZ. The group was formed through JYP and Sony Music Entertainment Japan’s Nizi Project Season 2.
12. What is So Geon’s debut song?
His debut title track with NEXZ was “Ride the Vibe.”
13. What is So Geon’s fandom name?
NEXZ’s official fandom is called NEX2Y. JYP formally announced NEX2Y’s second-generation fan-club recruitment in 2026.
14. Does So Geon participate in songwriting?
Yes. JYP’s official information for Beat-Boxer states that all NEXZ members participated in writing the lyrics for “Next To Me.”
15. What is So Geon’s latest NEXZ album in 2026?
NEXZ’s latest Korean release as of September 21, 2026 is SAUCIN’, released on August 24, 2026.
Conclusion
So Geon is a 20-year-old South Korean member of NEXZ, born on September 13, 2006, and raised in Japan. He entered the entertainment industry through Nizi Project Season 2, where he finished fourth and earned his place in NEXZ.
He officially debuted with NEXZ on May 20, 2024, when the group released Ride the Vibe. Since then, NEXZ has expanded across both Korean and Japanese music markets and has moved into increasingly large-scale performances and international activities.
In 2026, So Geon has been part of the group’s Mmchk, Hellmate and SAUCIN’ eras, while also participating in touring and interviews that show more of his musical perspective.
For fans researching So Geon age, birthday, biography, NEXZ debut, Nizi Project 2 or interesting facts, the key confirmed details are his September 13, 2006 birthday, South Korean nationality, Japan upbringing, fourth-place Nizi Project 2 finish and May 2024 debut with NEXZ.
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