In the Nine Nether Demon Cave dungeon of the devilkind world.
About four hours had passed since the Grand Murder Rampage.
The strength of Yu Fuxue and the others' familiars had all increased to above lv.23.
The devilish creature that Yuan Zhao had subdued was originally at lv.24. Naturally, it could not increase its strength in a few hours by killing demons below lv.24.
However, the strength of the three-tailed fox devilish creature had already increased to lv.24.
However, when a devilish creature advanced to lv.23, it was far from reaching the level of a Heavenly Devil.
After all, the lowest threshold was lv.25. Only then could it barely be considered a Heavenly Devil.
There were only eight hours left.
They had to be very anxious.
But what was the use of being anxious?
As long as they acted, it would work.
Even if a familiar's strength increased to lv.25, it might not be able to enter the Heavenly Demon Tower.