@Chayz just wait then you will understand in future  I don't wanna give you spoiler but I can give you hint  Remember when yoojin meet hyunjae from his previous dimension?? He did something on yoonjin's heart or body I don't remember much so after that yoojin become pregnant with him even knowing

@Kickinass queen what are u saying? what's going on?? Why am I so confused.......