Male protagonist: Zhang Yiyi (28 years old) Image: calm and reliable, rational and wise, strong in action, with leadership and planning talents. They may look handsome or bookish on the outside, but they are tough as a rock on the inside. He has an almost "old father"-like tolerance, pampering and meticulous care for the heroine Wenxin. He is two years older than Wenxin, and this maturity gives him the confidence to protect her. Cold on the outside and hot on the inside, with a strong sense of responsibility, clear goals, and extremely persistent in the people and things he identifies. He is aggressive and decisive in the mall, but in front of Wenxin, he is as gentle as water, with great patience and a spirit of sacrifice. Occasionally she would feel anxious due to Wenxin's physical condition or willfulness, but she could always adjust quickly and become her most solid support. Heroine: Wen Xin (26 years old) Image: Beautiful and soft in appearance, maybe with a hint of fragility, clear eyes but occasionally showing melancholy. Due to severe hereditary heart disease, the skin color may be pale and the body may be slender. Depression caused by childhood trauma makes her emotions feel like a roller coaster at times. She is sensitive and prone to anxiety, but she also has strong empathy and insight. Personality: The core trait is the contradictory unity of "willful and sensible". In front of Zhang Yiyi, whom she deeply loves and absolutely trusts, she will unconsciously reveal the coquettishness, dependence and petty temper of a little girl. She may make seemingly "unreasonable" demands on him because of physical discomfort, depression or work pressure. This is actually her way of seeking a sense of security and confirming that she is loved.