Caroline must admit that she was fascinated by his insight. But she also found his insight to be too far-fetched to be implemented.
"It's not that I want to discourage you or anything, but each person's mana is distinct from others," Caroline explained. "If a mana isn't suitable for the person, then rather than curing, it would become a deadly poison."
Upon hearing that, Leonard's mind quickly shifted to blood type.
'So mana is like blood type in a sense.' He thought.
What Caroline meant was that a person's mana could indeed be injected into someone else to heal, but that was only possible if the caster was manipulating them.
Once the mana injection was done without the caster, then an incompatible mana would become a deadly weapon in the person's body.
The situation was similar to how those with Type A blood cannot receive Type B or AB blood.
