In her first year of high school, the woman encountered a charismatic and confident heir who had just transferred to her school. She quickly developed an overwhelming crush on him. However, due to the disparity in their family backgrounds and her deep-seated insecurities, she kept her feelings hidden for three long years. Unexpectedly, after working hard to get into the same university as he did, she dared not hope...

My name is Sato Kai, and I am a ghost running from a past that wants me dead. Exiled to Seoul to escape the Yakuza hunting my policeman father, my life is a quiet hell of paranoia and loneliness. That is, until I met Kwon Ji-hyuk. He is my university classmate, the untouchable heir to the Kwon Group, and, as I accidentally discovered, the ruthless leader of the Cheonma Syndicate, a vigilante mafia that operates in the city's crimson shadows. Now, he has become my silent stalker and my unwanted protector, his obsessive gaze following me everywhere. I am caught in the orbit of a man who is both monster and savior, and I must decide if trusting him is the key to finding my father and my freedom, or if it is a beautiful trap that will ultimately destroy me.