Regen Kojou

“Primogenitors don’t die. Even if you impale their hearts or crush their heads, they still live on. To live alone for centuries or even millennia, even if you want to die… Yeah, you can’t call that anything but a curse.”
Yukina watched silently while Kojou grumbled as if making a sigh.
Even though vampires were said to be ageless and undying, that did not mean they were completely invulnerable. In particular, their brains, which controlled their magic power, and their hearts, which governed the circulation of their blood, were lethal vulnerabilities.
Even for the Elders, receiving severe damage to either meant certain death.
However, as the Fourth Primogenitor, Kojou’s body was different.
Even his completely destroyed heart had regenerated; most of the blood he had lost had flowed right back into him.
But there would be no coming back if he managed to get himself turned to ash like vampires in legend.