Meet the cast of If Wishes Could Kill and discover their past roles while revisiting the Netflix thriller’s dark, gripping, and deadly story.
If Wishes Could Kill quickly captures attention with its gripping story, eerie atmosphere, and high-stakes mystery built around a deadly wish-granting app. The series follows students who face terrifying consequences as their desires trigger a chain of supernatural events. The series seamlessly weaves together elements of horror, suspense, and emotional conflict, ensuring that viewers remain captivated from the beginning to the end.

Furthermore, the cast brings the story to life with strong and convincing performances. Many actors already appear in popular dramas and films, while others gain recognition through this series. In addition, this list highlights the main cast and shows where you may have seen them before.
Jeon So-young as Yoo Se-ah
Yoo Se-ah leads the investigation into the wish-granting app at Seorin High in If Wishes Could Kill. She actively searches for answers after strange deaths begin to spread among students. Furthermore, she refuses to stop even when the danger turns personal.

Jeon So-young appears in Yumi’s Cells Season 3 as Jenny. She also takes roles in My Youth as young Je-yeon, Melo Movie as Han-sol, and Crushology 101 as Yeo-reum. In addition, she continues to build a strong presence in youth and romance dramas.
Baek Sun-ho as Kim Geon-woo
Kim Geon-woo acts as Yoo Se-a’s secret boyfriend who grows increasingly worried about her obsession with the app. He tries to protect her while questioning the truth behind her actions. Furthermore, he gets pulled into the deadly consequences of the game.

Baek Sun-ho appears in Dong Jae, the Good or the Bastard as Si-un. He also appears in Between Him and Her as Eun-woo. In addition, he continues to take roles in emotionally driven drama series.
Kang Mi-na as Im Na-ri
Im Na-ri starts as a popular student who does not believe in the app’s dangerous rumors. She maintains her confident image at school despite growing tension. However, she slowly becomes affected by the app’s deadly influence in If Wishes Could Kill.

Kang Mi-na appears in Welcome to Samdal-ri as Hae-dal. She also appears in Hotel del Luna as Yoo-na and Midnight Horror: Six Nights as Soo Hyeon. Additionally, she continues to balance fantasy and emotional drama roles.
Hyun Woo-seok as Kang Ha-joon
Kang Ha-joon serves as the group’s logical thinker who studies the app using his coding skills. He actively searches for patterns behind the mysterious deaths. Furthermore, he works to uncover how the system functions before more lives are lost.

Hyun Woo-seok appears in Cheer Up as Min-jae. He also appears in Love Alarm as Seong-jun. In addition, he continues to take part in youth-centered drama projects.
Lee Hyo-je as Hyeong-uk
Hyeong-uk starts as a playful prankster at Seorin High. He makes a wish on the app and quickly faces deadly consequences. Moreover, he struggles to survive as fear spreads through the school.

Lee Hyo-je appears in Taxi Driver season 3 as Jeong-su. He also appears in Dr. Romantic as In-beom and Love in the Moonlight as Yoon-sung. In addition, he continues to work across both modern and historical dramas.
Jeon So-nee as Ha-yeong
Ha-yeong supports the group as they investigate the origin of the wish-granting app. She helps connect key clues related to its supernatural nature. Furthermore, she actively assists in uncovering the curse behind it.

Jeon So-nee appears in As You Stood By as Eun-su. She also appears in Melo Movie as Ju-ah, Parasyte: The Grey as Su-in, and Soulmate as Ha-eun. In addition, she builds a strong career across both film and drama.
Roh Jae-won as Bang-wool
Bang-wool works as a shaman who helps the group confront the supernatural force behind the app. He investigates the curse and provides spiritual insight. Furthermore, he guides them as they face dangerous rituals and consequences.

Roh Jae-won appears in Squid Game Season 3 as Nam-gyu. He also appears in A Killer Paradox as Sang-min, Daily Dose of Sunshine as Seo-wan, and Ditto as Geun-tae. In addition, he continues to take roles in intense and psychological narratives.
Kim Si-ah as Hye-ryeong
Hye-ryeong becomes the first victim of the Girigo app and triggers fear across Seorin High. Her sudden death exposes the app’s deadly consequences to the entire school. Furthermore, her case pushes others to investigate the curse more seriously.
Kim Si-ah appears in Sweet Home as I-su and The Silent Sea as Luna. She also appears in Kill Bok Soon as Jae-yeong and The Closet as Myung-jin. In addition, she continues to take on roles in high-concept thrillers and fantasy-driven stories.
Choi Ju-eun as Si-won
Si-won plays a key role in uncovering the origin of the Girigo app curse. She connects closely with Hye-ryeong as her friend and gets drawn into the mystery after her death. Furthermore, she carries the burden of her identity as the daughter of a shaman tied to the curse.
Choi Ju-eun appears in Dong Jae, the Good or the Bastard as Yu-ri. She continues to take supporting roles in thriller and drama projects. In addition, she builds experience through character-focused storytelling.
These cast members bring If Wishes Could Kill to life through strong performances and familiar faces from a wide range of hit dramas and films. Furthermore, many of them continue to build impressive careers across thriller, fantasy, and youth-centered stories, making their filmographies worth exploring. If you enjoyed their performances in this series, you may also recognize them from their previous and ongoing projects listed above.
You can still stream the full episodes of If Wishes Could Kill on Netflix and experience the story all over again.
Sources: Prime Timer, Netflix
