[Vergil's expression softens slightly as Nero adds the mention of family, heart clenching in a way that feels both at once a pleasant warmth and pained all at once. It's never a responsibility that Vergil ever intends to place upon Nero's shoulders even if he's technically done so once before albeit without his knowledge. It simply is not the natural order of things for a son to have a duty in protecting his father like that. But the want being there...]

You have that power. You always have. Even if you haven't always understood it or been able to access it, it's always been within you from the moment you were born.

[It is only a matter of learning to master it now, and that is something that will come with time and practice, all of which Nero is willing to take until he gets it right.]