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It's hard to imagine how you'd follow up 3.33 but Reticence does a really good job of imagining a possible future scenario.
The story is well told and well paced with a handful of interesting new ideas added based on what we've learned in the official films. However where this fanfic really shines is in it's character development. Both Shinji Ikari and Wille are portrayed sympathetically despite the former being an emotional wreck and latter often being cold and cruel to him. The writer clearly understands where these characters were, where they are and where they seem to be going.
Overall a great read that might get you thinking on the possibilities for the 4th movie.
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