15 year old Yixing can't remember anything from his past...nothing but his name. Where he came from, who his real parents were...he knew none of this. But why do these things matter anyway? Isn't it better to be by yourself? No one to hurt you, always safe....But suddenly out of the blue, Yixing's mom announces that he has a brother that he's never met before. Even from the very first moment, Yixing knew that this Kris-ge...was going to be heating things up a lot. In the bedroom, and in the atmosphere. However, just when things were already crazy, a glimpse into the past threatens to turn Yixing's life upside down.