Lara Jean is a Korean-American junior in high school. She is highly organized and prefers traditional rituals like baking over modern teenage drama. She spends the story handling the fallout of her previously private love letters being unexpectedly mailed out.

Peter is a handsome popular high school student who plays on the lacrosse team. He projects an easygoing confidence that hides underlying insecurities. He struggles to balance his current relationship with obligations to his past.

John is a former member of Lara Jean's middle school friend group who has since moved away. He is polite and studious, sharing Lara Jean's appreciation for old-fashioned traditions. He engages in a thoughtful written correspondence with her.

Genevieve is Peter's ex-girlfriend and Lara Jean's former best friend. She harbors resentment and behaves cruelly to mask her own emotional turmoil. She actively works to sabotage Lara Jean's social life and relationships.

Kitty is Lara Jean's ten-year-old sister. She is responsible for originally mailing out Lara Jean's secret love letters. She is highly perceptive and confident, eagerly attempting to act as a matchmaker for the adults in her life.

Margot is Lara Jean's older sister who attends college abroad. She acts as the mature voice of reason for her younger sisters. She is highly practical and provides strict but loving advice on life and relationships.

The widowed father of Margot, Lara Jean, and Kitty. He works at a hospital and relies on his daughters for companionship. He is cautious about the idea of re-entering the dating pool.

Stormy is a flamboyant resident at the Belleview retirement home. She has been married four times and possesses a colorful romantic history. She provides bold, contradictory advice about love and independence.

Chris is Lara Jean's fiercely independent friend and Genevieve's cousin. She dyes her hair lavender and maintains a tough, pragmatic attitude toward high school scandals.

Josh is the Song Covey family's next-door neighbor. He recently ended a long-distance relationship with Margot. He tries to rebuild his platonic friendship with Lara Jean before leaving for college.

A pretty, competent woman who lives across the street from the Song Covey family. Kitty actively tries to set her up with Mr. Song Covey.

Lara Jean's teenage cousin. She openly expresses surprise that a popular boy would be interested in Lara Jean, which fuels Lara Jean's insecurities.

Lara Jean's aunt and the mother of Haven, Harry, and Leon.

Lara Jean's uncle, who co-hosts the holiday gathering at his home.

One of Lara Jean's younger twin cousins.

One of Lara Jean's younger twin cousins.

Peter's younger brother. He enjoys baked treats and looks up to his older brother.

Peter's mother, who owns an antique store. She is protective of her son's emotions.

A reserved Japanese woman residing at the Belleview retirement home. She prefers a spare, minimalist style that directly contrasts with Stormy's aesthetic.

A male patient at the Belleview retirement home who interacts with the other residents.

Lara Jean's gay friend. He previously received one of her love letters before coming out, and he now offers her a sympathetic ear regarding her romantic dilemmas.

Genevieve's father, whose private actions create deep instability for his daughter.

A young woman who was in Margot's class at school. She has a secret connection to Genevieve's father.

The overseer at the Belleview retirement home. She is receptive to Lara Jean's ideas for improving resident activities.

A member of Lara Jean's old middle school friend group who participates in the game of Assassin.

Genevieve's friend who accompanies her to the movie theater.

Josh's new girlfriend following his breakup with Margot.

A British boy whom Margot begins dating in Scotland.