JKSManga
here's a thought. Immortui successfully removes enough of Quinn's Vampire magic but can't remove all because his ampire traights were given by the magic of his system, But in the process he allows the dragon heritage to be expressed, thus allowing his Dragon genetics to be fully expressed and Quinn turns into a vampire dragon. Ray feels the connection to the new dragon, even from the other universe and knows he is not alone anymore. He uses the teleport ability to go to Quinn in the other universe and joins in the fight. Ray was the king of the dragons and could feel when they disappeared, so he should feel when one is created. Quinn's system becomes a vampire dragon system.