This seems fine for the most part, though there are some things that I don’t necessarily agree with. For one, I don’t think you have to be overly specific or overly analytical in translating Kamisato’s quote there to use it as a justification for a multiversal Toaru tbh. Some might level you the response that this is just semantics and a matter of interpretation/translation. Also, in terms of this specific context, it may not even be all that wrong to say that what Kamisato is saying here is actually true, as it’s supported by another quote from the LN. What Kamisato is referring to in that quote is parallel worlds as you’d come to think of them in most other works of fiction, like Marvel, DC, etc. Think of the many worlds interpretation, whereby infinite universes exist for every “decision we make”. So you’d essentially have other universes (essentially an infinite number) all with other versions of our main cast. As of yet, those really haven’t been proven to exist in Toaru...