While Aster was drinking from his cup, he evaluated Arthur's expressions and noticed he was truly sad that Nadia was going to die due to the wound in her dantian.
Originally, he wouldn't have minded giving Arthur a bottle of his blood, since it was enough to more or less stabilize Eris and Mylene's souls and nourish them so some extent, curing a damaged dantian should be possible.
The only problem is that he now wasn't sure if there will be side effects due to the changes his bloodline is going through even at this point, as of right now only Sarina, Eris and Mylene had drank it.
Sarina was his woman so there wasn't any problem if she were to ever have an episode like Lilia and Alice… for Eris and Mylene, Rya already told him there shouldn't be any problems because there is a huge gap between their original cultivation realms, it was effective for them only because they lost most of their powers.
