Darcy is a responsible 10th-grade student at Bluford High who cares deeply about her academics and family. She lives in a cramped apartment with her mother, grandmother, and younger sister, often acting as the family's emotional anchor. Feeling isolated at school and burdened at home, she seeks stability and attempts to keep her family together following her father's abandonment five years earlier.

Jamee is an eighth-grader and Darcy's younger sister, profoundly affected by their father's departure five years ago. Once happy, she has grown cynical, angry, and withdrawn from her family. She retreats into loud rap music and begins associating with troublemakers, attempting to project a tough exterior to hide her deep emotional pain.

Bobby is an older teenager who hangs around the neighborhood and has a history of criminal issues. He manipulates younger, vulnerable students to do his bidding, specifically targeting Jamee. He uses intimidation and threats of violence to maintain control over those he exploits.

Grandma lives with Darcy, Jamee, and their mother, requiring constant care after suffering a stroke. She frequently loses her lucidity, mistaking the present for the past and asking for people who are gone. Despite her fading memory, she retains moments of clarity and offers crucial wisdom about forgiveness and holding onto beautiful memories.

The mother of Darcy and Jamee works exhausting hours as a nurse to support her family in their small apartment. She lives with constant anxiety about money, layoffs, and her ability to provide for her daughters and ailing mother. Overwhelmed by her responsibilities, she often misses the emotional struggles her children face and harbors deep guilt over her husband's departure.

Carl is Darcy and Jamee's estranged father, who abandoned the family five years prior to the events of the story. His sudden departure left a massive emotional void in the household, particularly affecting Jamee. He left to seek a different life, forcing his family to compensate for his sudden absence.

Tarah is a loud, flamboyant student at Bluford High who initially clashes with Darcy during a science assignment. Though Darcy judges her as boorish, Tarah proves to be highly perceptive, quickly calling out Darcy's arrogance. She possesses a forgiving nature and a deep capacity for empathy, making her a loyal companion.

Cooper is Tarah's boyfriend, a laid-back high school student who enjoys playing practical jokes. Darcy initially views him negatively after he drops a water bug down her shirt, but she later discovers his genuine desire to help others. He wants to become a firefighter and possesses strong protective instincts toward his friends.

Brisana is initially Darcy's only friend at Bluford High. She comes from a more privileged background than Darcy and frequently looks down on their peers. She is highly judgmental, quickly dismissing people like Tarah and Cooper with classist insults, which causes a growing rift in her friendship with Darcy.

Hakeem is a student at Bluford High and Darcy's long-time crush. He is musically talented and kind, bringing a sense of lightness and joy to Darcy's stressful school life. He takes an interest in her and introduces her to positive social experiences away from her family's struggles.

Aunt Charlotte is Mom's sister, living a relatively privileged life compared to the Wills household. She is highly critical, frequently complaining about her life while actively insulting Darcy's mother. She neglects to visit her ailing mother, preferring to pass judgment from afar.