He worried that time was running out.
So instead of leaving when the level boss has been recruited, it's better to stay at this level.
"When the curse was born, everyone died one by one... At first, we didn't even know why people were dying."
"But later, some people like me, who awakened abilities in the apocalypse, began to receive guidance."
"This guidance informed us of the existence of the Balance Curse."
"The number of living creatures in the area must remain constant. Once there is a change... it triggers a correction of life and death. The balance is absolutely unyielding, never tilting..."
"Later, it seemed we also received confirmation, and it was indeed so; the balance did not tilt."
"When the curse reached Level 3... all beings were equal. If a mosquito flies in, we might all die."
