The AI's unusual classification of crab sperm as mobs makes newly fertilized eggs the exact soul source Amayon's portal requires.
The AI earlier treated each crab sperm cell as a mob. Their mass destruction broke Sheol's balance and triggered Demon Eviction.
Because the return spell now demands the same kind of souls that began the event, ordinary creatures cannot substitute. Raul can create an enormous replacement population by fertilizing the eggs still in the ocean.
Some of those souls will pay Amayon's tithe, while the surviving offspring can restore the crab people.
Countless tiny glowing mob markers spreading from one crab into a field of ocean eggs.
The classification supplies the only scalable matching-soul solution remaining in the dead world.