Crash Course in Romance — Characters & Cast

Dedicated to supporting her niece's educational aspirations, caring for her brother, and providing a stable home through her banchan business.

An ex-national handball player turned shopkeeper whose journey evolves from merely surviving daily family hardships to permitting herself to pursue romantic joy and self-actualization.

Driven by perfectionism and professional survival, later shifting toward genuine emotional healing, connection, and protecting those he loves.

A multimillionaire math instructor deeply traumatized by the past suicide of a student, living on energy drinks and anxiety. Meeting Haeng-seon breaks his emotional isolation, turning him into an empathetic mentor and devoted partner.

To succeed academically, ease the burdens on her aunt, and protect the stability and dignity of her unconventional family.

Haeng-seon's high-achieving niece and adoptive daughter who strives to excel academically without burdening her family, eventually standing up publicly to protect her aunt's reputation and integrity.

Obsessively safeguarding Chi-yeol's position and career at all costs as a twisted coping mechanism for his own past familial trauma.

Chi-yeol's dedicated head manager who harbors a psychopathic dark side. Motivated by a delusional need to protect Chi-yeol as his savior, his obsession turns violent against anyone threatening Chi-yeol's focus.

Maintaining structure, helping manage the family shop, caring for his loved ones, and pursuing personal interests.

Haeng-seon's younger brother with Asperger's syndrome who manages the store's finances and routines, evolving to find his own independent social sphere and romantic companionship with Young-joo.