Dante used several demonic barriers to protect himself from the impact. They endured long enough for the shockwave to pass before shattering, finally leaving the heat to attack Dante's body.
He felt like intense flames were crawling under his skin. His body was covered with a natural shield of a fusion of scales and segmented exoskeletons, yet it wasn't enough to resist all the heat.
Naturally, he'd have died. Even with his new Vitality stat, he still would have died
But he didn't.
His skin burned, his eyes melted, his blood boiled, and yet he was alive.
His burned skin turned pale white, his molten eyes solidified again, his blood cooled down, and even his hair regrew.
That was the power of his trait, Unyielding Possession, with a fully awakened Demon Bloodline. It wasn't just regeneration, it was regaining the former shape that was taken by external forces.
So long as Dante didn't cause the damage himself, he'd always heal.
