Hyeju

Hyeju is a South Korean singer, rapper, and dancer, formerly known by the stage name Olivia Hye. She is best known as the twelfth and final member of the girl group Loona, completing the group's pre-debut project in 2018. Today, she performs under her birth name Hyeju and is a member of the group Loossemble under CTDENM Entertainment.

Hyeju's solo debut single "Egoist" showcased her deep vocal tone and charismatic stage presence, establishing her as a performer with a distinctive "girl crush" energy. She has contributed to Loona's discography as a lead dancer and rapper, and her work with Loossemble has further demonstrated her versatility. As of 2026, she continues to release music, tour, and engage with a dedicated fanbase that appreciates her evolving artistry.[edit]

Son Hye-ju grew up in Seoul's Gwanak District, the younger of two daughters. Her older sister was a constant companion during childhood. Hyeju attended Seoul Gwanak Elementary School and later Gwanak Middle School, where she first developed an interest in performing. She listened to groups like Girls' Generation and 2NE1, whose music inspired her to pursue a career in entertainment.

In her early teens, Hyeju began taking dance lessons and entered local competitions. Her big break came when she successfully auditioned for Blockberry Creative. As a trainee, she underwent intensive training in singing, rapping, and dancing. On March 30, 2018, she was revealed as the twelfth and final member of Loona with the solo single "Egoist," featuring fellow member JinSoul. The track was produced by G-High of MonoTree and marked the culmination of Loona's individual member rollout.

Shortly after, Hyeju joined Loona's third sub-unit, Loona yyxy, alongside Yves, Chuu, and Go Won. The unit released "beauty&thebeat" on May 30, 2018. Hyeju's pre-debut period was defined by the pressure of being the final piece of a carefully constructed group, but she embraced the responsibility.[edit]

Hyeju made her full group debut with Loona on August 20, 2018, with the mini-album "++" and lead single "Hi High." Over the next five years, she participated in all of Loona's releases, including "X X" (2019), "#" (2020), "12:00" (2020), "[&]" (2021), and "Flip That" (2022). The album "12:00" became Loona's first entry on the Billboard 200, peaking at number 112.

In January 2023, Hyeju and most Loona members won a legal dispute to terminate their contracts with Blockberry Creative. She then signed with CTDENM Entertainment and debuted as a member of Loossemble on September 15, 2023, with the self-titled mini-album "Loossemble." The group released a second mini-album, "One of a Kind," on April 16, 2024. Hyeju also changed her stage name from Olivia Hye to simply Hyeju, reclaiming her identity. She continues to tour and release music with Loossemble as of 2026.[edit]

Hyeju is known for her "girl crush" image, edgy, confident, and charismatic on stage. She often sports dark hair, bold makeup, and trendy streetwear. Her stage presence is intense, contrasting with her warm and relatable personal content on social media. Fans, known as Orbits (for Loona) and Loomé (for Loossemble), celebrate her "Egoist" era as a defining moment. On Instagram (@lnxexu), Hyeju posts in a mix of Korean and English, sharing behind-the-scenes moments and daily life.[edit]

The orbit surrounding Hyeju is defined by a unique duality: the intense, singular devotion of her solo debut era and the resilient, collective energy of her current chapter with Loossemble. While she never cultivated a separate fandom name distinct from the broader LOONA community, fans who followed her journey from the final pre-debut reveal to her 2018 solo release have long maintained a specific focus on her "girl crush" persona. This dedication was most visible during her initial solo period, where the mystery of her identity drove a wave of engagement that remains a core part of the group's lore. Her transition to Loossemble has shifted this dynamic, blending individual fan support with the unified efforts of the Orbit community, though her history of social media silence adds a layer of intrigue that keeps her audience deeply invested in her public appearances. The narrative of her career is less about viral incidents and more about the enduring story of completing the LOONA puzzle and navigating a high-profile reunion after legal disputes. iFANN has evaluated Hyeju's global standing based on worldwide consumption signals and media coverage. Hyeju is currently EVALUATED_UNRANKED, meaning she does not hold a placement in the Global Top 1,000 or any Top-100 scope list published by the system. These rankings reflect her status as a recognized artist within the K-pop landscape without yet securing a position in the highest tier of global celebrity metrics.[edit]

Hyeju holds the distinction of being the last member revealed for LOONA, finally completing the group's ambitious pre-debut project in 2018. Off-stage, she is known for her love of spicy tteokbokki and owns a pet dog named Ddo-ddo. Fans frequently point out a small birthmark on her left hand whenever she appears in photos. She has openly expressed a desire to pursue acting roles, citing Girls' Generation's Taeyeon and 2NE1's CL as key role models. A defining moment in her legend occurred when she released her solo single album *Olivia Hye* shortly after her reveal. This strategy created a unique cultural mythology, marking the culmination of the "LOONAverse" mystery where fans waited months for the final piece of the puzzle. Another significant chapter in her story involves the 2023 reformation of five former members into the unit Loossemble. This event marked a happy ending to years of legal disputes, allowing the group to return to the stage together. Fans also often discuss her previous withdrawal from social media platforms like Instagram and Fromm as a recurring topic of speculation, adding a layer of quiet intensity to her public persona.[edit]

Hyeju has an older sister. She grew up in a supportive family in Seoul's Gwanak District. She keeps details of her family life relatively private, but has mentioned maintaining close ties with her parents and sister. She has a pet dog named Ddo-ddo.[edit]

Hyeju is associated with her former Loona groupmates and current Loossemble members, including Hyunjin, Yeojin, Vivi, Go Won, and others. She collaborated with JinSoul on her debut single 'Egoist,' produced by G-High of MonoTree. She is managed by CTDENM Entertainment.[edit]

As of 2026, Hyeju has not publicly confirmed any romantic relationships. She maintains a private personal life and has not been linked to any dating partners through credible sources. Her relationship status is single.[edit]

Per iFANN's editorial analysis, Hyeju's net worth in 2026 is estimated at $500,000. Her financial portfolio stems from her extensive activities with LOONA between 2018 and 2023, followed by her ongoing work with Loossemble starting in 2023. Revenue streams include album sales, concert tours, merchandise, digital streaming, and brand endorsements. Exact figures remain undisclosed due to the opaque nature of K-pop idol finances, but typical earnings for mid-tier girl group artists support this valuation range.[edit]