It would have been perfect if Eric and his ladies managed to enter Willa's mouth and then escape with her help, but life couldn't be that good and smooth for him could it?
Through his spirit sense, he knew that five experts of the 2nd Realm and above were coming towards this place at great speed.
No matter how fast they entered Willa's mouth and then disappear into the Dimensional Pocket of Nightless Stone City, they still wouldn't be able to escape these guys' senses and sight.
Not to mention that they might even think that his Whale was hiding some sort of opportunity or treasure and might even try to attack it in order to get their hands on whatever it was.
Man dies for wealth as birds die for food!
That expression shouldn't be underestimated in the least. Human greed knew no boundaries, as sometimes people would run after it even if they knew that their chances of dying were practically 100%.