The thick black fog slowly rolled around, and even the defense built with three Red Tear Stones couldn't stop the erosion of the black fog.
At least five stones are needed for Rod to ensure his humanity doesn't degrade.
And they must be replaced every half clock hour; otherwise, the Red Tear Stones will be eroded and their protective effect will be greatly diminished.
Liszt sighed, "No wonder it's Your Excellency No. 0; the acuity of your soul is so strong that we can't precisely determine the number of Red Tear Stones needed and the time involved, even without knowing we've been polluted."
No. 7 said, "Yes, one of the main reasons for returning to the Royal City is because the soul has unknowingly accumulated too much pollution, forcing us to purify at the Soul Church."
Rod gazed around, and under such thick black fog, the range of vision through the Eye of the Soul compressed to about 600 yards.
This is the result of his greatly strengthened soul.
