Archer in the world of Toaru/ Kamijou Touma in the world of Fate/stay night

Other than Fate or Bleach ideas relating to the series, any new Toaru ideas I have will be posted on a newer collection of ideas relating to the Toaru series specifically from now on.

This idea can go either way with what world it's focused on,but I want the same general plot for either one. In other words, I either want Archer in the world of Toaru, or Kamijou Touma in the world of Fate/ stay night. I won't go too much in detail on the specifics of each one; I'll mainly just focus on where I want the plot to end up.

Whatever world you're focusing on, the main characters should be both Kamijou Touma and Archer, not one or the other. I want this story to advance differently from the canon of Fate/stay night, if you chose that world, but I want the Toaru canon to mostly be the same, with minor differences.

I want Kamijou Touma to break Archer's illusion of him being eternally trapped in his role as a counter guardian. I also want Imagine breaker to be able to negate Archer's contract with Alaya, at least while Archer is touching Imagine Breaker. For Archer to really be free, that mainly depends on the world you choose. If it's in the Toaru world, then just touching Imagine Breaker once should be enough to break the contract, but if he's in the world of Fate/stay night, I want him to be transported back to the Toaru world with Touma, while he's holding on to Imagine Breaker.

I want Touma to remind Archer of his past ideals, and for Archer to initially hate him for that. Following the illusion shattering, I want Archer and Touma to coexist in the world of Toaru, with Archer staying with Touma, Index, and possibly Othinus, depending on where you insert this into the timeline of Toaru. You can then continue the story of Toaru from wherever the world has left off prior to the events of this story, only this time with Archer included, or you can just end the story there.