Declan is the oldest of the three Kane brothers and heir apparent to the Dreamland media empire. He is a billionaire known for his cold, serious demeanor and intense workaholism, which he uses as a shield against emotional attachments. To inherit the CEO position according to his late grandfather's will, he must marry and have a child.

Iris is a driven African American woman in her mid-twenties who serves as Declan's indispensable assistant. She struggles with dyslexia, a condition she fiercely hides to prove her professional worth by working incredibly long hours. Protective of her independence due to her parents' abusive marriage, she impulsively steps in as Declan's contractual bride to save the company's future.

Cal is the youngest of the three Kane brothers. Unlike Declan, Cal possesses a more relaxed and friendly demeanor, quickly becoming one of Iris's closest companions. He struggles with a history of alcohol addiction but remains highly protective of those he cares about, frequently warning Iris to guard her heart.

Seth is the current CEO of Dreamland and the abusive father of the Kane brothers. Following the death of his wife, he turned to alcohol and subjected his sons to severe abuse. He desperately clings to his corporate power and uses manipulation, insults, and blackmail to thwart Declan's succession.

Mr. Yakura is the CEO of a Japanese company and the landowner central to the new Dreamland Tokyo deal. He repeatedly asks for contract revisions without specifying his exact desires. He is a challenging business prospect who closely evaluates the personal integrity of his partners.

Rowan is the middle Kane brother who chooses to work at the Dreamland theme park rather than in the corporate office with Declan. His pursuit of his own happiness causes tension with his oldest brother, who harbors resentment over being left to handle the company alone.

Zahra is Rowan's girlfriend and an employee at the Dreamland theme park. She warmly welcomes Iris into the Kane family circle, offering tactful advice and friendship as Iris adjusts to her new arrangement.

Iris's mother is deeply supportive and loving. Having left an abusive husband to protect herself and her daughter, she provides a model of emotional strength. She remains unaware of the contractual nature of the marriage, genuinely believing her daughter has fallen in love.

Iris's grandmother shares a small apartment with Ms. Landry. She provides a warm, humorous family environment and playfully tests Declan's resolve by feeding him incredibly spicy chicken during their first meeting.

Harrison is Declan's personal driver. He maintains loyalty to his employer and refuses bribes from Seth Kane, occasionally offering Declan valuable advice on relationships and personal growth.

Mrs. Yakura is Mr. Yakura's wife. Her presence at the theme park requires extra attention from Declan and Iris, adding pressure to an already stressful business negotiation.

Leo is Brady Kane's former best friend and lawyer. He observes Declan and Iris to ensure their marriage satisfies the inheritance requirements, offering a toast that compares marriage to a lifelong road trip.

Brady is the late grandfather of the Kane brothers and founder of the Dreamland empire. His posthumous will stipulates difficult personal requirements for his grandsons to receive their inheritances, setting the central plot in motion.