Wow it's so Black Mirror and Predestination-ish complicated and fresh, making it a loop or something lol. Though that would imply that, video games made by fictional characters reincarnated into the real world could become an actual world that people from the real world could be reincarnated into, which in itself is kinda scary and exciting at the same time, as it means that conceptually it would mean that lots of video games in our reality could be worlds of its own and AI could gain their own consciousness, especially for those that are futuristic full-immersion diving VR games like Overlord etc because VR games would have used more advanced technologies and intelligent AIs. This kind of setting is applicable to basically all Isekai making the series authors their own "fictional character reincarnated into the real world fulfilling the destiny of creating the fictional world" fantasy, as the concept would make sense too. I really hope when Oria's identity is revealed in the manga, there can be a few scenes drawn with Oria looking straight into readers' eye 4th wall breaking as if he knows he's being read from the real world, because that'd be awesomely dope!