Vampire's Guardian

I have reincarnated for hundreds of millions of years just to protect you. Where are you? Who am I? My consciousness is only to protect you, you are everything to me. Even if you want me to die, I am willing. I will wait for you at your reincarnation point. Where is the next reincarnation point? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.