A high school student known for his outgoing and impulsive personality. He gives nicknames to everyone in his life. Though he projects confidence, he internally seeks acceptance and wishes to be loved for exactly who he is, refusing to change for his partners. He carries the memory of an intense, anonymous encounter with a mystery girl.

Sky's best friend who has recently returned from a seven-month exchange program in Italy. Outgoing and straightforward, she struggles with her reputation and fears that boys are only interested in her physically. She establishes clear boundaries to protect herself from past hurts, seeking a genuine emotional connection over casual encounters.

Daniel's best friend and Sky's boyfriend. Holder is stoic and fiercely protective of the people he cares about. Having experienced significant loss in his family, he is cautious about changes to his social circle and initially warns Daniel against pursuing a relationship with Six to prevent potential drama.

Holder's girlfriend and Six's next-door neighbor. Known for her consistently happy and optimistic demeanor, Sky serves as the emotional glue for her friend group. She supports those around her and warmly embraces the changing dynamics when her friends start dating.

Daniel's high school girlfriend at the beginning of the story. Their relationship is characterized by constant bickering and breakups. She regularly attempts to change his personality, eventually demanding more maturity from Daniel than he is willing to offer.

Daniel's younger sister. Though she is frequently the target of Daniel's teasing and nicknaming, she is observant of her brother's moods and behaviors.

Sky's aunt who legally adopted her when she was a child. She is fiercely protective of Sky and rescued her from an abusive living situation, providing her with a safe and loving home.

Holder's twin sister who passed away a few years prior to the events of the story. Her loss deeply impacts Holder, shaping his cautious and protective approach to relationships.

A high school student and part of Daniel and Holder's friend group. He often hangs out with the boys to play video games and eat lunch together.

Sky's uncle who attends family dinners. He is observant of the teenagers' dynamics and attempts to check in on Daniel when he notices his frustration.

Daniel's father. He enjoys teasing his son and his son's dates, relying on humor to connect with the teenagers in his home.

Daniel's mother. She participates in the family's lighthearted teasing and helps create a comfortable, casual environment in their home.