However, this drawback of running out of energy was one that could be fixed by allowing their existence to revert to its past again. However, this isn't a solution that they want to use because it means that they will become weaker.
They haven't lost much in terms of strength because, since the time they fell back into the River of Time, it hasn't been more than a second. But if they want to acquire all of the divine energy they have spent, they would have to let time affect them for a long period of time.
They don't want to give up their strength for divine energy, but they had to many times. This made them lose too much power.
Fortunately, they had become too resistant to the reverse flow of time, so their loss of strength didn't make them lose their awareness of the situation.
This made them look like a fish jumping in and out of a river. They were in the river, but they couldn't be submerged by it.
