1943. Corrupt Theory
It struck Walker as odd that the corrupted mana would dissipate so quickly. It had literally just seemed to make itself denser trying to escape the natural mana that it was clashing with. This was similar with any mana when it faced an opposing mana that would try and balance it. But the corrupted mana dissipated and did not maintain its clash with natural mana.
Walker could still sense the corrupted mana though. It caused the other manas in the air and around the area that he had caught the corrupted jewel grub to become slightly chaotic. This made Walker understand that there was some form of flow to the corrupted mana.
When he closed his eyes and tried to track that feeling, he was sure that the corrupted mana was moving in direct opposition to the natural mana. As if it was filling spaces that there was not natural mana.