The crater was already a few meters deep, especially at its center where Smooka was dropped.
This made it easier for him to escape sideways, under the ground instead of taking the downwards route.
Smooka appeared a few meters away in an underground open area, as he dropped to the ground, trying to collect himself.
It was not easy fighting against three Demon Kings at the same time, especially when one of them was on a different league of its own in terms of power.
As the Demon Kings thought they had won, they returned to the battlefield where their minions where fighting, to order a retreat.
They were smart. They knew that the danger was not from that of the humans, but the beasts with them.
There was something killing them off one by one, and judging from his power and grudges, it had to be the beast they had just fought against, and eventually killed.