Ding!
<You have accumulated a thousand drops of Vampire Lord Origin Blood>
<You have reached the Everlasting Blood Refining Art's Third Stage of Reparation>
<Your Divine-rank Regeneration has been strengthened>
<Your Divine-rank Regeneration has synergized with your Everlasting Blood Refining Art and upgraded its recovery effects to the Fourth Stage of Regrowth>
<Your Everlasting Blood Refining Art's blood power has also reached Early-stage Demigod rank>
<Note: Assimilating 899 other types of origin blood will bring out the full potential of the Third Stage of Reparation>
…
With Divine-rank Regeneration, Vaan could already recover from any fleshly wound nearly instantly.
On the other hand, the Everlasting Blood Refining Art's Third Stage of Reparation allowed his inner organs to recover from any damage, but at the speed of Divine-rank Regeneration.