>>12437>>ARE infact relevant and help influence the progression of the plot.
Sure, they happen to be relevant. But the story could have been written differently—without Nagisa, and with other characters serving the same roles—and the overall plot would be unaffected.
For example, last week I flew to Atlanta, rented a Toyota from Avis, and drove to visit my client for a work meeting. Was the "toyota from Avis" important? Sure—it's what got me from the airport to my hotel & my client. But if I had rented a Honda or a Ford instead the end result would be no different. Everything that Nagisa contributes to Rebellion could have been contributed by other characters, it just happened to be written with Nagisa.