This is the culmination of Toji's character arc during the show, hence why we don't see him again afterwards. From the start Toji has been on a journey of understanding about Shinji's situation and the weight he carried as an Evangelion pilot. Going from judging how Shinji was able to do his job without being there, to going through something almost exactly the same (Nerv calls out of the blue, has to pilot the eva for the sake of another - in this case his sisters hospital treatment, and then that evangelion going berserk)
For this, Toji is rewarded with a level of understanding of Shinji, and their mindsets "overlap" enough for him to be "invited" into Shinji's mindscape.
The interesting thing to note here is also what it says about Shinji's character. A close friend with more understanding about his current situation has just entered his mindset, become as close as two people are shown to be to understanding each other so far in the show, and Shinji is still so self absorbed he cant even notice this as he continues his own journey of introspection.
Episode 19: A Man's Battle aka Introjection
Toji lays in a hospital bed across from Shinji after the destruction of Eva 03. He dozes off and witnesses Shinji and Rei conversing in the "dream train" we've grown so accustomed to seeing inside Shinji's psyche.
Does this imply there is already some sort of melding of AT-fields, that they are already beginning to share those spaces we see as "dream realms" because their souls can be one? Do the Evas create a special bond between pilots?
Usually this kind of sequence only takes place in Shinji's mind, but we now see a conscious Toji, who seems grounded enough to even comment "this is weird."
Shinji even speaks to Rei as if it was still only his dream, not inside Toji's head. Yet Toji looks on and hears everything.
Thoughts?
Damn i should rewatch the anime i completely forgot this even happened
It's such a brief, almost throwaway scene, it took multiple rewatches for me to even give it a second thought
I think some kind of link due to the Evas and manipulation of their AT fields makes the most sense. Super interesting stuff!
It's just one episode before Shinji's pseudo-Instrumentality when he is absorbed by EVA-01. Not a stretch to say Anno was thinking about how exactly the ending was going to play out at this point.
I always thought of this as a sort of "angel world" ie a non-linear mental space that is a part of instrumentality, or maybe pre-instrumentality. Rei 3 is reaching out to humans through her connection to the Angels. She's doing so in a way that is unbounded by the limits of time because she's become a god.
Characters who make direct contact with Angels end up on the train, because it's not shinji's train it's Rei 3's train. Shinji is swallowed by Leliel, starts having train visions. Toji's Eva turns into an angel, now he's on the train. Asuka didn't show up on the train, but you do hear sound effects from the train during the mind rape and she is at a train yard. And of course everybody is on the train during instrumentality.
I'm also on the fence every re-watch as to whether or not the younger versions of characters we get in these visions are the subconscious of the characters or the angels themselves trying to make a connection to a human mind. Or maybe it's both - like the angels are forcing humans to talk to a mirror, but the mirror warps to get across the angel's intent.
I dunno. I'm spitballing at this point.
This is my opinion as well, rei-3 / Lilith becomes unbounded by time, that's why you see her in the very first episode. All of the crazy supernatural head shit that happens throughout the show is her