What If Will Could See Death Auras As Part Of His Healing Abilities As A Son Of Apollo? What If The First

What if Will could see death auras as part of his healing abilities as a son of Apollo? What if the first time he met Nico he saw his aura as a child of Hades and thought he was like actively dying? Will, of course freaked out, trying to make Nico sit down, to tell him what happened, "how are you even standing up right now?!" and Nico's just standing there all confused because for once Nico's not actually injured and he doesn't really understand why this pretty boy is panicking over him.