Three Years

It was the best explanation that Cain could come up with. His reasoning could also be something else entirely. None of them would ever be known. 

"Ahh...whatever." Kali casually shrugs. "He gave us great gifts so let's not waste them! Hopefully, those bastards don't decide to leave when we're finished with this Dao Fruit. It will be oh-so fantastic to kill them at their full powers. I'm getting tingles just thinking about it." 

As she spoke, Kali already assimilated into a cultivation state, took out the Martial Dao Fruit, and began the absorption process. 

Cain and Luo Na were quick to follow her lead. The thought of revenge was just one of the many burning drives fueling their motivation for greater cultivation. 

... 

Outside of the Demi-God realm. 

Inside a large, dimly lit cave. Lights of the Great Dao rippled through space. Space shattered like glasses as numerous divine lights quickly flew out.