As soon as he saw her pulling out the Spatial Bag, Negris's heart skipped a beat, thinking to himself that a fully intact Lava Demon's heart could not possibly be placed inside a Spatial Bag, unless her Spatial Bag was like Ange's Dimensional Space, containing air and water.
Some objects with strong energy reactions must be in a dormant state to be placed inside a Spatial Bag, just like you cannot put a bucket of burning charcoal into a sealed box, but it can be stored freely when not burning.
However, if a Demon Heart is dormant, it is no longer a heart.
As expected, what she pulled out was a stone, a heart-shaped stone.
The Hand of the Mage held it as it slowly fell to the ground, and Aesani, slightly embarrassed, said, "When I found it, it still had a few sparks, and from its body, I comprehended many arcane secrets of magic, only I don't know when it extinguished. I wonder if it could be used to throw for a chance at rebirth?"