Corey and Pamela ran while using their unique lightning movement arts.
Due to the fight between Syrelle and Thalos, the attention of Anton and the two Tier 6s were mainly on the two siblings, allowing Corey and Pamela to climb the world tree without interference from them.
However, that did not mean that they did not receive interference from the world tree itself.
One thing that Corey had not told Pamela was that he was worried that the world tree would refuse their help and worst of all, attack them.
And his fears came to pass.
A lightning bolt fell from the crown of the world tree, and it nearly turned Corey and Pamela into ashes.
Fortunately for them, they had not reached halfway to the top of the world tree, and it was weakened.
They barely managed to dodge it, but the lightning bolt was one that literally caused the hair on their body to stand at attention.