Won Ji-an: 7 Explosive Facts About The Actress Behind Squid Game's Tragic Player 380, Se-mi

The character Se-mi, also known as Player 380, became one of the most talked-about new additions to the deadly competition in the highly anticipated second season of Netflix's global phenomenon, Squid Game. Her storyline, which featured a complex blend of charisma, desperation, and a tragic bond with fellow player Park Min-su, cemented her as a pivotal figure in the new iteration of the Games. As of December 10, 2025, the spotlight is now firmly on the talented South Korean actress who brought this challenging role to life, the rapidly rising star, Won Ji-an.

Won Ji-an's portrayal of Se-mi, a bold young woman who believed that "leaving this place" was scarier than risking her life inside the arena, captivated international audiences, even with limited screen time. While the character's sad demise in Season 2 left a lasting impact that continues to haunt Min-su in the upcoming Season 3, the actress herself is enjoying a massive career surge. This article delves into the full profile of Won Ji-an and her most recent, fresh projects that confirm her status as one of K-Drama's most promising talents.

Won Ji-an (Se-mi / Player 380) Complete Biography

Won Ji-an, whose birth name is Kim In-seon (김인선), is a South Korean actress managed by Hiin Entertainment. She has quickly established herself in the industry with a series of compelling and versatile roles across different genres, from military drama to youth romance and now, the intense survival thriller of Squid Game.

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• Stage Name: Won Ji-an (원지안)
• Birth Name: Kim In-seon (김인선)
• Date of Birth: August 17, 1999
• Age: 26 (as of 2025)
• Place of Birth: South Korea
• Height: Approximately 170 cm (5 feet 7 inches)
• Agency: Hiin Entertainment
• Debut: D.P. (2021)
• Notable Roles: Moon Young-ok in D.P., Kyung Da-jung in Hope or Dope, Ha Joon-kyung in If You Wish Upon Me, Joo In-hae in Heartbeat, and Se-mi (Player 380) in Squid Game Season 2.

The Tragic Arc of Se-mi (Player 380) in Squid Game

Se-mi, designated as Player 380, was introduced in Squid Game Season 2 as a member of the infamous "Thanos Team," a group of players known for their aggressive and often ruthless approach to survival. Despite her association with this formidable faction, Se-mi was portrayed as a charismatic and beautiful young woman, whose outward bravado masked a deep-seated fear of the outside world, making the Games a paradoxical refuge for her.

Her most significant connection was with Player 387, Park Min-su, a shy and easily intimidated young man. Se-mi formed a close bond with Min-su, often acting as his protector or guiding force within the brutal environment of the 37th Squid Game.

The character's tragic fate in Season 2 served as a major emotional turning point for Min-su, who struggles with her memory in the subsequent season. Although Se-mi does not return physically in Squid Game Season 3, her presence is felt through Min-su's hallucinations and the psychological trauma he endures, emphasizing the lasting impact of her demise on the narrative.

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Won Ji-an's Rise: From Military Drama to Global Stardom

Won Ji-an's journey to becoming a global star is a testament to her versatility and ability to choose impactful projects. Her career trajectory is marked by a rapid ascent from a strong debut to securing main roles in high-profile series, setting her apart as a dynamic force in the Korean entertainment industry.

The Breakthrough Role: D.P. (2021)

Won Ji-an made her acting debut in the critically acclaimed Netflix series D.P., a military drama focusing on a squad of Korean military police whose mission is to catch deserters. She played the role of Moon Young-ok, a character that showcased her potential for emotional depth and dramatic performance. The success of D.P., which received international praise for its raw depiction of military life, immediately put her on the map.

Securing the Lead: Hope or Dope (2022)

Following her strong debut, Won Ji-an quickly secured her first major lead role in the web drama Hope or Dope (also known as Juvenile Delinquency). She starred as Kyung Da-jung, a troubled high school student who becomes involved in drug dealing. This role allowed her to demonstrate a wider range of acting skills, navigating the complexities of a character caught between difficult circumstances and the search for hope. The series was popular enough to be renewed for a second season, solidifying her status as a leading actress.

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Expanding Her Range: If You Wish Upon Me and Heartbeat

Further showcasing her versatility, she took on supporting roles in network dramas, including the 2022 series If You Wish Upon Me, where she played Ha Joon-kyung. In 2023, she starred in the fantasy romance drama Heartbeat, playing the main role of Joo In-hae, a cold-hearted woman who inherits a dilapidated mansion. These roles proved her ability to handle diverse genres, from emotional melodrama to lighthearted fantasy, before her return to the intense world of Netflix with Squid Game.

Won Ji-an's Explosive 2025: Upcoming Projects and Future Entity

The year 2025 is shaping up to be a monumental one for Won Ji-an, with several major projects slated for release. These upcoming K-Dramas and films highlight the industry's confidence in her star power and her ability to anchor major productions, confirming her as a central figure in the next generation of Korean actors.

• Tempest (2025): A highly anticipated political drama where Won Ji-an is set to play Kang Han-na. This series is expected to be a major production, showcasing her in a more mature and complex role, dealing with high-stakes political intrigue.
• Surely Tomorrow (also known as Waiting for Gyeongdo) (2025): A new romantic comedy series where she will star alongside top actor Park Seo-joon. She takes on the main role of Seo Ji-woo, a project that is already generating significant buzz in the K-Drama community and will likely introduce her to an even wider global audience.
• Made in Korea (2025): A Disney+ series where she is cast as Choi Yoo-Ji. This project, along with her Netflix roles, confirms her strong presence on major global streaming platforms, which is crucial for international stardom.
• Secret: Untold Melody (2025): A movie where she plays Yoo Jeong-A, further expanding her filmography and demonstrating her commitment to both the small and big screens.

These roles, especially her collaboration with Park Seo-joon and her starring roles in multiple 2025 series, suggest that her work as Se-mi in Squid Game Season 2 was merely a springboard. Her continued success is a clear indicator of her talent and her promising future as a leading figure in the Hallyu wave.

The Enduring Legacy of Player 380

While the character Se-mi, Player 380, met a tragic end, her impact on the narrative of Squid Game Season 2 and the forthcoming Season 3 is undeniable. Her bold personality, her desperate motivation to escape a life scarier than the Games, and her intense relationship with Park Min-su provided a crucial emotional core to the new season's ensemble. The character's complexity—being a core member of the ruthless Thanos Team yet showing genuine vulnerability and connection—resonated deeply with viewers.

For Won Ji-an, the role was a pivotal moment, showcasing her ability to handle a high-stakes, globally scrutinized project. Her performance as Se-mi has successfully transitioned her from a rising star in the K-Drama world to an international actress with a massive global following, paving the way for her exciting slate of 2025 projects. Fans of the actress and the series are eagerly awaiting her future work, both in the lingering memory of Se-mi and in her new, diverse roles.