Yeoreum

Lee Yeoreum, known mononymously as Yeoreum, is a South Korean singer, rapper, and actress. She is a member of the K-pop group WJSN (Cosmic Girls), its sub-unit WJSN CHOCOME, and the project group EL7Z UP. Yeoreum debuted with WJSN in February 2016 and has since become known for her bright stage presence, sharp rapping, and versatile dancing. She placed fifth on Mnet's survival show Queendom Puzzle in 2023, earning a spot in the limited-time group EL7Z UP. In 2023 she also made her film debut in the comedy-horror Teaching Practice: Idiot Girls and School Ghost 2. As of 2026, Yeoreum continues to promote with WJSN, which is celebrating its 10th anniversary with a special single titled Bloom Hour. Fans admire her for her infectious energy, her aegyo (cuteness), and her growth as a performer over the years. [edit]

Yeoreum was born in Seoul and grew up with a younger brother. She attended Seoul Performing Arts School, where she graduated. Before joining Starship Entertainment as a trainee, she learned to play piano, pipe, and janggu (a traditional Korean drum). She also earned a scuba diving certification. On December 17, 2015, she was introduced as a member of WJSN's Joy Unit alongside Xuanyi and Eunseo. Just days later, on December 21, she participated in a Christmas cover of Mariah Carey's "All I Want For Christmas Is You" with the Wonder and Joy Units, giving fans an early taste of her vocals. [edit]

Yeoreum officially debuted with WJSN on February 25, 2016, with the mini-album Would You Like? She took on the roles of sub-vocalist and lead rapper, representing the Capricorn zodiac sign within the group's cosmic concept. In August 2016 she joined the Starship project unit Y-Teen alongside Monsta X and other WJSN members, releasing the single "Do Better." On October 7, 2020, she debuted as a member of the WJSN sub-unit CHOCOME with the single album Hmph! (흥칫뿡), showcasing a playful, cute concept. In 2023 she competed on Mnet's survival show Queendom Puzzle, finishing in 5th place and becoming a member of the project group EL7Z UP, which promoted for about a year. That same year she landed her first film role as Riko, a member of the black magic club, in the high school comedy-horror Teaching Practice: Idiot Girls and School Ghost 2. In 2026, WJSN announced a special 10th anniversary single Bloom Hour. [edit]

Yeoreum is known for her bright, energetic stage presence and her ability to switch between cute and charismatic concepts. Within WJSN, she is often described as the group's aegyo specialist, with a playful and affectionate personality that endears her to fans. Her social media, especially Instagram, features a cute, fan-friendly tone with lots of emojis and behind-the-scenes moments. The fandom, Ujung, appreciates her organized yet adorable nature. Media coverage highlights her growth as a performer, particularly after her strong showing on Queendom Puzzle. [edit]

Yeoreum's identity is inextricably bound to the resilience of Cosmic Force, the collective that has sustained WJSN through multiple lineup shifts and a decade of activity. While she shares this banner with her groupmates, her specific narrative arc stands out as one of adaptability rather than viral isolation. She navigated the departure of five members in 2023 alongside Dayoung and Yeonjung, becoming a pillar of the trio that kept the group alive until their tenth anniversary celebrations in 2026. This stability allowed her to pivot from standard member duties to headlining the sub-unit WJSN CHOCOME with "Hmph!" and eventually stepping into cinema with Teaching Practice: Idiot Girls and School Ghost 2. Despite her longevity and clear versatility across music and acting, iFANN has not yet gathered sufficient data to assign a global or genre-specific ranking to Yeoreum. Consequently, no ordinal placement exists in the current database for her worldwide influence or hip-hop dominance. The lack of a documented individual fandom name further underscores her status as a core component of the larger Cosmic Force rather than a solo phenomenon with a distinct fanbase structure. Her audience remains engaged through the group's collective projects and the steady stream of behind-the-scenes content she shares on social media, where her playful personality bridges the gap between idol and friend.[edit]

Yeoreum's stage name translates directly to "Summer" in Korean, reflecting the warmth she brings to the stage. Born Lee Jinsook, she legally changed her name to Lee Yeoreum before her career began. Beyond her vocal and dance talents, she holds a certification as a scuba diver and can play the piano, pipe, and janggu. Fans often hear her sleep-talk, and her distinctive nose mole has become an iconic feature recognized by Ujung. Within the group, she earned the nickname "Little Octopus" due to her energetic and clingy nature, while Eunseo is known as the "Big Octopus." She maintains a close friendship with TWICE's Chaeyoung and has frequently expressed a deep interest in musical theatre and acting. A defining moment in her lore occurred in October 2020 when she was selected for the debut of WJSN CHOCOME, marking a shift to a sweet concept that fans still celebrate. Another legendary chapter involves her steadfast presence during the group's major personnel changes between 2018 and 2023, cementing her reputation as a stabilizing force within WJSN.[edit]

Yeoreum has a younger brother. She is Christian. She has a dog named Yeolmu. She grew up in Seoul and maintains a close bond with her family, though she keeps details of her home life relatively private. [edit]

Yeoreum is closely associated with her WJSN groupmates, especially the CHOCOME members Soobin, Luda, and Dayoung. She collaborated with Monsta X through the Y-Teen project. Through EL7Z UP, she worked with contestants from Queendom Puzzle. She is friends with TWICE's Chaeyoung. [edit]

No public romantic relationships have been confirmed for Yeoreum. As a K-pop idol, she has kept her dating life private, and there are no verified reports of dating, engagement, or marriage. As of 2026, she is believed to be single. [edit]

iFANN currently estimates Yeoreum's net worth at $1 Million as of 2026. This figure reflects her diverse revenue streams spanning over a decade in the industry. Primary earnings come from group music sales and streaming performance with WJSN, complemented by income from concert tours and exclusive fan meetings. Sub-unit promotions with WJSN CHOCOME contribute significantly to her financial portfolio, alongside her recent acting role in the film Teaching Practice: Idiot Girls and School Ghost 2. Brand endorsements and various collaborations further bolster her assets, though specific contract values remain undisclosed.[edit]