I Was Reincarnated on an Island Where the Strongest Species Live So I Will Enjoy a Peaceful Life on This Island - Chapter 24.1

Huh, Pheonix lady is the Vampire. They were both gone at the same time with no explanation when she got summoned and she got sad when he said he was dissapointed with the vampires behavior. They both are immortal so it could work. Then again they could have just known each other for a long time and had a mutual respect but her reaction seemed deeper than that.