He was her brother, but he couldn't help but fall in love with her. He once told himself, no, how could this be okay, Ye Jin is my sister. In order to hide his emotions, he deliberately became cold, deliberately found someone he didn't love as his girlfriend, and was twice as harsh on Ye Jin. In order to hide his love for his sister, someone accidentally revealed that he knew that he was not Ye Jin's biological brother. The stone in his heart fell to the ground, so that he could love Ye Jin without any concealment. "I like you, I have always liked you..." "I am your sister" "So what, we are not related by blood anyway..."