If Wishes Could Kill — Characters & Cast

Driven by loyalty to her friends and a fierce desire to stop the cycle of death.

Begins as a promising track-and-field student athlete focused on her sports career. When her friends fall victim to the curse, she evolves into a courageous protector willing to venture into the spirit realm to end the horror.

Craves social validation and deep affection, which gets twisted into toxic possessiveness.

Starts as a highly popular student with idol-like looks who dismisses the app as silly. As insecurity and envy consume her, she succumbs to spiritual possession and gradually transforms into a primary vessel for the curse.

Unconditional love and protectiveness toward Se-ah.

Secretly dating Se-ah, Geon-woo makes a wish on the app to protect her, inadvertently triggering his own death timer. He spends his arc battling hallucinations to protect Se-ah until the end.

Solving the mystery using data and code.

The top academic student and coding enthusiast who tries to analyze Girigo through technical logic. He is forced to accept spiritual reality when logic fails to break the curse.

Atoning for her past and protecting her younger brother from spiritual harm.

Ha-joon’s estranged elder sister who abandoned a corporate job to become a shaman (mudang). She guides Se-ah through rituals and teaches her how to navigate the spirit realm.