Does that mean Nazuna doesn't really have any weaknesses like the other vampires? It also has been shown that she is significantly stronger than her vampire peers (Seri to be exact).
And since we don't know how long Haru's disappearance lasted, wild assumptions may arise.
Is Nazuna truly Haru's child, or is Nazuna actually Haru's rebirth? Y'know, like what a phoenix does. At least until we have confirmation about who her father was.
But since Kabura does not mention anything about that, it's probably the former.