Heroine: Lucy Williams: Lucy Williams is an independent girl. She has transferred to another school with excellent grades. On the surface, she seems to be calm and unruffled, but in fact, deep inside she hides a family story that is not known to the public. There is a hint of melancholy in her eyes, but when faced with difficulties, she always shows more courage and determination than anyone else.
Male Protagonist: Mars Wilson: Mars Wilson is the president of the student council at his school and the heir to the family business. He is aloof on the outside and always seems to keep a certain distance, making it difficult for people to get close to him. However, his heart is actually very delicate, and he has a keen observation of the people and things around him. He treats his work rigorously and seriously, and is loyal and reliable to his friends. After the appearance of Lucy Williams, he begins to show more emotional fluctuations.
Supporting Actress: Rose Evans: Rose Evans is Mars Wilson's childhood friend. On the surface, she seems to be gentle and kind, always appearing with a soft and harmless image. She is good at winning the love and sympathy of others with her sweet smile and caring words. But in reality, she is deep inside with her own plans and goals. She has complex feelings for Mars Wilson, both the innocent memories of her childhood and the possessiveness of her adulthood.
Supporting Actor: Abel Davis: Abel Davis is Lucy Williams' neighbor with a sunny and cheerful personality, and his laughter is always infectious to those around him. He is passionate about life and always remains optimistic no matter what difficulties he encounters. He has special feelings for Lucy Williams.