The outer region of the forest posed no problem for this trio. They easily trampled over every beast they faced. The forest is vast even though the outer region is thousands of km long so they stayed in that region for three days before reaching the inner region.
As Fenrir is nearing Rank-3 Vishnu gave it some alchemy pills and let it hunt on its own. There is nothing in the inner region that could endanger it unless extremely unlucky and come across a Rank-3 beast.
Vishnu and Jiaxin started hunting together. As they entered deeper and deeper into the forest more and more Rank-2 beasts started appearing. Vishnu also started cultivating the Darkness element. His talent for Fire and Darkness is Exceptional while lightning is high. After the Fire core reached peak level his cultivating speed increased so he could reach the peak of Darkness element faster which would then help the lightning core to reach peak faster too.
