I admit being curious about these spells.

[ While they're sort of glossed over, the fact that they were has caught her interest just as much as her curiosity. ]

I understand you'll need a good handle of borderlines before learning, and that you require a shinki name to cast them, but not much else is said. Such as what kind there are and how they're performed.

[ Hannah... You haven't even tried casting a borderline yet. ]