This is what I think will happen at the end of the game.
After all the fighting between the Guardians of Light and the Seekers of Darkness, the χ-blade will be forged, and Xehanort will finally claim it. By using it to unlock the power of Kingdom Hearts, Xehanort gains the Stand ability to travel to alternate timelines.
He then goes to the timeline where Billy Zane still voices Ansem SOD and takes the χ-blade of that timeline.
The two χ-blades combine to create the χ2-blade, which gives Xehanort the power to solve statistics problems without using a computational device (because he's old and doesn't remember how to solve things by hand).
Then Sora has to do better on the exam than Xehanort in order to defeat him and not go to summer school.
This is what I think will happen at the end of the game.
After all the fighting between the Guardians of Light and the Seekers of Darkness, the χ-blade will be forged, and Xehanort will finally claim it. By using it to unlock the power of Kingdom Hearts, Xehanort gains the
Standability to travel to alternate timelines.He then goes to the timeline where Billy Zane still voices Ansem SOD and takes the χ-blade of that timeline.
The two χ-blades combine to create the χ2-blade, which gives Xehanort the power to solve statistics problems without using a computational device (because he's old and doesn't remember how to solve things by hand).
Then Sora has to do better on the exam than Xehanort in order to defeat him and not go to summer school./shotshot