I just finished watching the Masked Rider 01 Order and the Generation Movie Version. I have a few questions to ask. Why did 01 and King Shi fight in the end?

Read the details here.(Try to ask your friends who have seen it to answer)
Question 1: When Shingo and 01 were fighting Mutant Knight No. 1, after Mutant Knight No. 1 used Gates 'time machine to upgrade itself, Shingo said that because the Time Killers wanted to protect it, Gates' time machine was left in the future, so the Time Killers came back here. If they destroyed it, history would return to its original state? Why did he say that? Didn't they go back to 12 years ago to save the changed history? Then why did it stay in the future? Shouldn't it be left in the past?
[Question 2: Why did you say that in order to erase 01's memory, or rather, the person's memory, the two of them had to fight?] And why didn't anyone allow him to do so?

Answer 1

The final battle between 01 and King Shi in the movie version of Masked Rider 01 was to protect the world from the attack of the " Despair ".

The Desperators were powerful creatures whose goal was to destroy the power of all the Masked Knights and plunge the world into despair. As the main characters in the Masked Rider series, 01 and King Shi had their own unique powers and abilities. They joined forces to fight against the Despair.

During the battle, 01 and Shi Wang discovered that there were some secrets hidden behind the Desperator. These secrets made the Desperator's goal more complicated and dangerous. In order to protect the world, 01 and King Shi must work together to destroy the power of the Desperate and find a way to stop them.

Therefore, the reason why 01 and King Shi fought in the end was to protect the world from the attacks of the Desperate and find a way to stop them.