HOPE or someone pretending to be HOPE claims the credit, but I think it's unlikely that he did the actual saving. Let me give you probably the strongest reason. Sensei is only able to save Maya because she is made visible to him and to no one else. But we're told by one of the narrators that the first god never learned how to change what people see. In contrast, Wires tells us he will guide our vision.
A second reason: why would HOPE call it a "final parting gift" when it's the start of his season?
I'm probably going to write a longer post about this at some point after I get far enough through my second playthrough.