Uh, nope, his very existence is a paradox.
Consider, in the original time line the Guyver Zoalord destroyed the Earth and the Creators, along with who knows how much of the universe.
Yet Jason came from a future time on a planet that would not have existed in the original time line.
So it's a paradox within a paradox and Jason is the one linking it all together and maintaining it.
If the original Time Line was restored Jason would cease to exist since he comes from the altered time line.
Basically it's complicated but Jason's destiny is linked to the fate of the entire WG reality.
That sucks. So he's gonna have to die eventually.