Seonghyeon is a South Korean singer, songwriter and member of the K-pop boy group CORTIS under BIGHIT MUSIC. Born on January 13, 2009, he became one of the youngest members of the group and officially entered the K-pop scene in 2025. His creative involvement in songwriting and music production has also helped distinguish him from many young performers.

Although Seonghyeon was still a child when he was first discovered, his path into entertainment developed gradually. A chance encounter at an amusement park on his birthday eventually led to an audition, years of training and, ultimately, his debut as part of CORTIS. Today, he is known not only as a performer but also as a young creator involved in the musical identity of his group.

Quick Facts About Seonghyeon

Who Is Seonghyeon?

Seonghyeon is a South Korean singer and songwriter best known as one of the five members of CORTIS. The group is managed by BIGHIT MUSIC and is recognized for involving its members in music, choreography and other creative aspects of its work.

His birth name is Eom Seong-hyeon, while Seonghyeon is the stage name he uses professionally. He is also known by the English name Sean Eom in publicly available profile information.

Unlike performers whose main role is limited to singing and dancing, Seonghyeon has shown an interest in the creative side of music. During his training, he became involved in songwriting and composition, interests that later became part of his work with CORTIS.

How Old Is Seonghyeon?

Seonghyeon was born on January 13, 2009, making him 17 years old in 2026. His birthday places him under the Capricorn zodiac sign.

He began pursuing entertainment opportunities while he was still very young. Because his career started before adulthood, much of his public story focuses on his development as a trainee and young artist rather than on an established adult career outside music.

Where Was Seonghyeon Born?

Seonghyeon was born in Seo-gu, Daejeon, South Korea. He spent his early years in South Korea before moving into the entertainment training system.

His early interest in different activities was not initially limited to music. In an interview, he recalled having childhood ambitions that included becoming a robot scientist or a soccer player. Music entered his life more directly after he learned guitar during elementary-school vacations.

That early exposure to guitar eventually became useful as he developed a broader interest in making music.

Seonghyeon’s Early Life and Discovery

One of the most notable parts of Seonghyeon’s biography is how he was first discovered.

In 2018, while celebrating his birthday at an amusement park with his cousin, Seonghyeon was approached by a member of a casting team. He was given a business card and was asked whether a photograph could be taken. Because he was very young at the time, he approached the opportunity casually and decided to give it a try. His parents also encouraged him to explore the opportunity without putting pressure on him to continue if he did not enjoy it.

He remained in contact with the company after the initial casting experience. Several years later, in 2021, he officially joined the company and began the training process that would eventually lead to his debut.

This makes his journey different from the image of an aspiring performer who decides on a career from childhood. Seonghyeon’s entry into entertainment began almost accidentally and developed into a serious musical career over time.

Seonghyeon’s Education and Training

Public information about Seonghyeon’s formal academic history is limited, so it is best not to treat unofficial education details as confirmed biography facts.

What is clearly documented is his professional training after joining BIGHIT MUSIC in 2021. His development involved singing, performance and creative music work. He also became increasingly interested in songwriting and composition.

His training period was particularly important because CORTIS was designed around a more hands-on creative approach. Rather than simply receiving finished songs and choreography, the members have participated in developing different elements of their work.

When Did Seonghyeon Start His Music Career?

Seonghyeon’s professional music career began with his preparation as a BIGHIT MUSIC trainee in 2021. His official public career began with CORTIS in 2025.

Before debuting, he was already developing his musical identity. He has explained that once he joined the company, he saw other trainees working on music and naturally became interested in creating songs himself.

He has also described listening to different genres and taking inspiration from everyday experiences. This creative curiosity became an important part of the artistic direction he later brought to CORTIS.

Seonghyeon’s CORTIS Debut

Seonghyeon debuted as a member of CORTIS in 2025 alongside MARTIN, JUHOON, JAMES and KEONHO. The group was introduced as a young creative team whose members participate in different aspects of the group’s music and visual work.

CORTIS began its debut era with “What You Want,” followed by the group’s first EP, COLOR OUTSIDE THE LINES. The project presented the members as young artists interested in developing their own sound rather than simply following established formulas.

Seonghyeon’s involvement in the group’s creative process was visible from the beginning. He received songwriting credits on “FaSHioN,” while also contributing to “Lullaby.” The members collectively participated in the creative process behind several debut-era songs.

What Is Seonghyeon’s Role in CORTIS?

Seonghyeon is a singer and songwriter in CORTIS, with an additional interest in music creation and composition.

His role is not limited to performing songs on stage. The group’s official credits show his participation in songwriting and production-related work. On “FaSHioN,” Seonghyeon is among the members credited for the track, while he also contributed to “Lullaby.”

This creative involvement is important to understanding why fans often search for Seonghyeon beyond basic questions about his age or appearance. His identity within CORTIS is closely connected to the group’s emphasis on member participation.

Seonghyeon and “COLOR OUTSIDE THE LINES”

CORTIS’s first EP, COLOR OUTSIDE THE LINES, established the group’s initial musical identity. The project contains tracks including “GO!,” “What You Want,” “FaSHioN,” “JoyRide” and “Lullaby.”

The album was built around the idea of discovering what the members genuinely wanted rather than simply following expectations. The group worked on more than 300 songs during a two-year creative process before narrowing the material down for the debut project.

For Seonghyeon, the album represented the beginning of his professional life as both a performer and creator.

Seonghyeon’s Work on “FaSHioN”

“FaSHioN” is one of the CORTIS songs with a direct Seonghyeon songwriting credit. The track combines trap and Southern hip-hop influences while using fashion and everyday locations in Seoul as part of its identity.

Seonghyeon has explained that some of the song’s ideas came from his own experiences visiting places such as Hongdae and Dongmyo with fellow trainees. Those everyday experiences became material that could be transformed into lyrics and concepts.

Seonghyeon’s Contribution to “Lullaby”

Seonghyeon also contributed to “Lullaby,” a psychedelic soul-influenced track from the group’s debut project. The song focuses on uncertainty, pressure and the comfort that can come from relying on one another.

His participation in songs with noticeably different sounds illustrates the broader creative range CORTIS has tried to establish.

What Inspired Seonghyeon to Become a Performer?

Seonghyeon’s route into entertainment was largely unexpected. He was initially discovered while visiting an amusement park rather than actively pursuing an entertainment career at that moment.

Later, music became a much stronger personal interest. He learned guitar after following a friend into guitar lessons and eventually became interested in writing and producing music after joining the company.

Another important influence was BTS. Before his debut, Seonghyeon used “MIC Drop” for his audition because he admired the choreography and performance. Years later, he performed the same song onstage, making it a particularly meaningful moment in his early career.

Seonghyeon’s Musical Interests

Seonghyeon has described himself as someone who listens to different types of music and draws inspiration from both songs and everyday experiences.

His creative interests have included experimenting with different genres. He has discussed periods when particular sounds influenced the music he was making and has said that he likes exploring new music from artists he follows.

This openness fits the creative philosophy of CORTIS, whose music moves between hip-hop, pop, rock and other influences instead of staying within one narrowly defined style.

Seonghyeon’s Personality and Approach to Creativity

Public interviews offer some insight into Seonghyeon’s personality without requiring speculation about his private life.

He has spoken about becoming more comfortable communicating with people as his career progressed. In a 2026 interview, he described himself as someone who often prefers solving his own problems rather than immediately asking others for help.

He has also discussed the importance of letting go of unnecessary effort and finding a more natural approach to performance and creativity. This perspective became particularly visible during CORTIS’s later activities.

Seonghyeon and CORTIS’s GREENGREEN Era

In 2026, Seonghyeon continued his career with CORTIS through the group’s second EP, GREENGREEN. BIGHIT MUSIC announced the six-track project as a release intended to show the group’s current identity more clearly.

The GREENGREEN era gave Seonghyeon another opportunity to develop as a performer and creator. His interviews around the comeback also showed how much his confidence had grown since his debut.

He reflected on how people had begun recognizing CORTIS in public and described those moments as evidence that the group had made progress. He also spoke about being proud of the team’s growing recognition for its music.

Seonghyeon in 2026

As of September 2026, Seonghyeon remains active as a member of CORTIS. The group has continued promotional and performance activities following its GREENGREEN era, while Seonghyeon has remained involved in group appearances and fan activities.

His career is still at an early stage because he is only 17. Rather than having a long list of acting credits or solo releases, his professional identity is currently centered on CORTIS, live performances, songwriting and the group’s expanding international activities.

Who Are Seonghyeon’s Family Members?

Seonghyeon has spoken publicly about his parents in connection with his early casting experience. When he was discovered at the amusement park, his parents encouraged him to try the opportunity and reassured him that he could stop if it did not suit him.

Beyond those comments, detailed information about his family has not been widely established through authoritative public sources. Because Seonghyeon is still a minor, avoiding speculation or unnecessary personal details is especially important.

Is Seonghyeon Dating or Married?

Seonghyeon is not publicly known to be married, and there is no reliably confirmed public information establishing a spouse or romantic partner.

Most publicly documented coverage of his life focuses on his music career, CORTIS activities, training and creative interests. Claims about private relationships should therefore not be treated as confirmed unless Seonghyeon or an authoritative representative publicly confirms them.

What Is Seonghyeon’s Net Worth?

Seonghyeon’s exact net worth has not been publicly confirmed.

He is a young artist whose professional career began only recently, and there is no reliable public financial statement that establishes his personal wealth. Online figures presented as exact net-worth amounts should therefore be treated cautiously rather than as verified facts.

Does Seonghyeon Have Movies or TV Shows?

Seonghyeon is primarily known as a singer and songwriter rather than an actor. His public entertainment credits are mainly connected to CORTIS’s music videos, performances and promotional content.

He should not be described as an established film or television actor simply because he appears in music-related visual projects. His main career remains music.

Where Is Seonghyeon Now?

As of 2026, Seonghyeon is continuing his career with CORTIS under BIGHIT MUSIC.

His recent activities have included the group’s GREENGREEN era, live appearances and fan-related activities. His ongoing development is closely tied to CORTIS’s music and performances, while his songwriting interests remain an important part of his artistic identity.

FAQs About Seonghyeon

Who is Seonghyeon?

Seonghyeon is a South Korean singer and songwriter who is a member of the K-pop boy group CORTIS under BIGHIT MUSIC. His birth name is Eom Seong-hyeon, and he became professionally active with CORTIS in 2025. He is also known for participating in songwriting and the group’s broader creative process.

How old is Seonghyeon?

Seonghyeon was born on January 13, 2009. He is 17 years old as of September 2026. He is one of the younger members of CORTIS and began his entertainment training while he was still a teenager.

When was Seonghyeon born?

Seonghyeon was born on January 13, 2009, in Seo-gu, Daejeon, South Korea. His birthday makes him a Capricorn. His career began with an unexpected casting experience when he was still a child.

Where is Seonghyeon from?

Seonghyeon is from Daejeon, South Korea. His publicly documented birthplace is Seo-gu in Daejeon. He later entered the entertainment training system and joined BIGHIT MUSIC in 2021.

What does Seonghyeon do?

Seonghyeon is a singer and songwriter. He performs as a member of CORTIS and has also participated in songwriting and other creative aspects of the group’s music. His work is currently centered on CORTIS rather than a separate solo career.

When did Seonghyeon debut?

Seonghyeon debuted as a member of CORTIS in 2025. The group’s debut project included songs such as “What You Want,” “GO!,” “FaSHioN,” “JoyRide” and “Lullaby.” His debut marked the beginning of his professional career as a K-pop performer.

What songs has Seonghyeon helped create?

Seonghyeon has songwriting or creative credits on CORTIS songs including “FaSHioN” and “Lullaby.” The group’s members are closely involved in its creative process, giving Seonghyeon opportunities to contribute beyond vocal performance.

Is Seonghyeon married?

No publicly confirmed information indicates that Seonghyeon is married. He is 17 years old in 2026, and his public career coverage primarily focuses on his work with CORTIS rather than romantic relationships.

What is Seonghyeon’s net worth?

Seonghyeon’s exact net worth has not been publicly confirmed. Since he is a young artist who only recently entered the professional music industry, specific figures circulating online should not be treated as verified financial information.

Where is Seonghyeon now?

As of 2026, Seonghyeon remains active as a member of CORTIS under BIGHIT MUSIC. He continues participating in the group’s music, performances, promotional activities and fan events while developing his skills as a young songwriter and performer.

Conclusion

Seonghyeon has built an unusual path into the K-pop industry, beginning with an unexpected casting encounter as a child and eventually becoming a member of CORTIS. Born in 2009, he entered BIGHIT MUSIC in 2021 and made his professional debut with the group in 2025. His identity as a young singer and songwriter is strengthened by his participation in the creative process behind CORTIS’s music.

By 2026, Seonghyeon had already moved beyond the early trainee stage and was developing into a more confident performer and creator. His continued work with CORTIS, songwriting contributions and growing stage experience make him a young artist whose career is still in its early but closely watched stages.