As much as I disliked the heroine routes of Little Busters, I don’t believe they should be trivialized. They weren’t happenstance or a simple step. They were monumental changes in the lives of people, rivaling the changes to those of the core Litbus members. Yes they were part of a larger plan with an intended outcome, but that doesn’t mean the plan birthed the world.
The world doesn’t exist to help Riki and Rin, Little Busters does. The world exists to help these people come to terms with something in their lives, or experience something they never had the chance to experience in life. It exists to grant the wishes of those dreaming the world into existence. Kyousuke and the gang just saw this as an opportunity to help Riki and Rin cope with the loss of everyone.
But it did. That’s one of the biggest moments in the epilogue, seeing how it changed people. Sisters became friends, distant family became closer, and an emotional promise became a wistful hope. All of the regrets highlighted in the fake world were fixed by the time the fake world ended, and the world only ended as all wishes (including Riki’s trauma and Rin’s social issues) were granted.
What makes you say they were the only ones supposed to make it out? Everyone makes it out of the world alive, no matter what. Whether they continue to live after they make it out isn’t guaranteed, however we know 100% that people are still living when they exit the world. The only thing telling us that Riki and Rin were the only ones supposed to survive the upcoming explosion was Kyousuke, and we saw him stubbornly reject any other outcome in a depressed haze mid-way through Refrain. He isn’t all that reliable when it comes to information about the fake world. From what we actually see, there’s a good chance Riki and Rin still die, and there’s a fair chance that everybody lives regardless.
I’ve disagree’d with this earlier in my post, but I’ll highlight again that the world was not born from a goal of protecting Riki and Rin. The goal of protecting Riki and Rin was born from the second chance given by the world.
I don’t believe the world was created from death. I believe it was created from strong wishes. Super stressful moments such as the apparent inevitability of death would create such strong wishes, but I don’t think the fake world has death in mind. This isn’t Angel Beats.
There’s a saying that goes something like “everyone becomes religious when they’re about to die.” This is the same idea.