Sturdy Tower
Looking at the energy conversion tower pumping out Demonic Energy in large quantity, Lumi frowned for a moment before saying, "We just need to destroy this tower, right? Why do I feel like it won't be enough to solve the problem?"
"Because it won't," Leon replied with a deeper frown.
For the Elder Tree to grow to its current height, it must have relied on the artificial Spirit Energy produced by this energy conversion tower under it.
He had suspected this.
However, something happened that caused the energy conversion tower to stop producing artificial Spirit Energy and started producing Demonic energy.
Logically speaking, the inversion of artificial Spirit Energy should only create artificial Demonic Energy. But there was nothing but True Demonic Energy in their surrounding.
Just this point alone is enough to raise a serious question and problem; how was this done?