To be the love of my life is another word for Lee Haechan, the filler of a woman named Milane who uses Shin Ryujin as a disguise. Lee Haechan, a main vocalist in a famous boy band, was born as a smart and active Gemini. Lee Haechan was able to attract everyone's attention with just one smile, but unfortunately his rival was Mark Lee. But that's okay, because these two look so cute together. Lee Haechan as the person who actively accompanies the girl in the midst of everyone's eyes, looks harmonious when they both realize that the two of them are only dreams and will never know each other.