Board Thread:General Discussion/@comment-114.125.55.150-20190521043602/@comment-36009152-20190629213632

We should certainly trust the word of the history altering, master manipulating and deceptive first progenitor XD

Yet you are likely correct, the Yu's are the same but how and really how much they are the same is another matter. Still it is likely something to do with the seraph gene, vampires can remember things over time, demons cannot and seraphs seem a bit forgetful as well but yes the seraph popping up in the human Yu is a linking factor for them/him.