Colin would have to fly in and destroy Zero's core.
Landing on the ground, out of Zero's sight, Colin hid Nicole among the ruins of the thrown castle, telling her to stay put and Zero would never find her. As Colin was about to leave, Nicole gave him a kiss goodbye.
"Good luck." she said, trying to hide the fact that she feared for his life. Colin, trying to hide the fact that he was caught off guard by that, simply nodded back to her (since he was a bit speechless) and flew away.
Once inside Zero's core, Colin noticed he was being powered by the years-old bodies of the past Void sub-Personas. Rukalor. Eight Bit. Guyton. Jeshu. And, Jayl Cel himself in the center. As Colin started to burn Rukalor with light, he noticed that the body started...coming back to life. But not as a Void Persona, as Rukalor would've been in his time without the corruption of the Void: a world-renowned scientist.
This is when Colin realized, that Zero's hold on Rukalor and all the others corrupted the future, and made the Void so powerful. Corruption. Violence. Darkness. Those were all segments of Void power. When the light burns away Zero's final hold, their original forms before they were corrupted return.
Roy Halete, scientist currnetly working to perfect artificial life.
Edison Mount, son of elite family Mount, founders of Peace Key City, future mayor.
Guyton is a product of the Void.
Jeshu is a product of the Void.
Jalerd Halete, son of Roy, creates first artificial species off of father's prototype.
Now with Zero completely powerless, Colin radiates a brilliant light from the pure souls of those freed from the Void, and burns Zero's gray shell away into nothing.
Zero is dead.
Lowering himself and the others down slowly, Colin reunites with Nicole, and for a moment, everything is fine.
Until they realize that the Void can no longer exist, and there's no Earth to go back to.
WHAT'S GONNA HAPPEN NEXT?