'She… she killed him?'
Eren asked the question to himself. He wasn't clear on that detail yet. Because various mana pulses fired off at various points on the battlefield made it impossible for anyone to keep track of everything even with their mana senses.
But with a demon spell, it was in the realm of possibility.
A demon spell was something only someone owning a demon beast would have access to. Since the demon beast and the ranker get connected on a deeper level through blood ritual, their existence as mana wielding entities becomes synchronized.
The results of taming demon beasts changed with each ranker and the demon beast itself. But there were a few things in common. Like, there was a possibility of a ranker's mana signature getting completely attuned to their demon beasts and vice versa if they shared a deeper bond. It wouldn't happen overnight. It might not happen at all. But once it did, it would allow the ranker and their beast to boost each other's spells.