Mother's Day reminded me of this long post I made on /a/. I had to go to sleep and work before finishing it, so an anon missed the ending. While these are all originally 4chan posts, the story is taken seriously in a "lost episode" style between e9-19. It's all the shenanigans that happen when Asuka's stepmother comes to visit. I hope anon finds this, but anyone can enjoy!

Asuka, Shinji & Rei attempt to support each other through the mess that comes from their individual and collective traumas with a little help from their friends. (Primary tag is Complex-PTSD, also contains occasional silliness, canon-level violence, etc). Master version with proper formatting is on ao3, discussion on SufficientVelocity.

A short look into One of Rei And Shinji's Dates

Lo que vio segundos después, al temblar el suelo bajo sus pies, desafió su cordura y juicio al poner en tela de duda su salud mental; aunque, no causándole ningún temor, sin entender de dónde venía, Shinji experimentó una sensación de confianza y seguridad ante la odisea que esperaba por él para comenzar. [One-shot]

After being abandoned, Shinji went through hell and back. However, as the Angels return, he is forced to face the demons he met so long ago, all the while being trapped as a mere pawn in a fight for the very soul of mankind. Rated T because it will get dark later on.

Misato reminds Shinji why he calls her mommy. [Smut, BDSM, femdom]

Misato tiene un problema que la aqueja desde hace años, ahora, llegando al límite que puede soportar, buscará ayuda en la única persona que cree adecuada para esto: Shinji Ikari.

Growing up in the shadow of the apocalypse, all Shinji Ikari ever wanted to do was reconnect with what little family he has left. On the cusp of his sixteenth birthday however, it would seem his father, and fate itself for that matter, have much more in mind for him.

Shinji was getting tired. The world had burned, but it hadn't. He had died but he was here. What would it take to break things enough to finally move on?

(Starts during episode 9) Shinji used to think he knew everything about Asuka. He thought she was just another stuck-up girl that thinks she knows everything. However, that changes when he sees who the real Asuka is one night.

Sometimes death isn't the end but way to start a new beginning

NGE x Castlevania: Desperate times call for desperate measures. Between the cults and the angels, demons have broken through into our reality. But where most see tragedy, Ritsuko sees opportunity, and with a new use for an ancient art, she may just develop the perfect weapon. Rated M for Adult Language, Content, and Themes.

In the Rebuild timeline, Asuka Shikinami Langley was chosen as the test Pilot for Unit 03's activation, leading to the events that unfolded. But what if Shinji was given the choice to become Unit 03's test Pilot? How much would this one choice change the entire timeline? Would he and everyone around him ever come to regret his choices?

[Set during REBUILD 3.0 1.0, SPOILERS for it and all REBUILD Movies] Shinji decides to confide Asuka something important he wanted to tell her from the moment they stopped at the village. And then, she decides to reveal something too, leading the two to finally deal with what both have left to each other ... and with what is left for them both to do in the New World ...

In his nightmares, Shinji sees a horrifying monster. He doesn't know it, but that creature is much more than a dream, and it's about to change his fate. (Fusion fic with Demon Lord Dante. Rated T for violence and a bit of language. AsukaXShinji in later chapters. Cover art done by borisd34)

He has lost everything. Deprived of identity, wandering across space, until a certain First Angel was launched toward him, not knowing that their interaction will cause the world to change its pace. Suddenly, he's now Shinji Ikari? With his new identity, what would he do in order to have a happy life? Wait, is that a god damn time traveller? What awaits him on his new path? (No OC)

Before he receives the letter that instructs him to go to Tokyo-3 to meet his father, young Shinji wished for someone to care about him and be kind to him. On that day, the wish was granted…and he encountered her. When she came with him, she brought a dark secret with her, one that was able to be either a blessing…or a curse, and her curse became her advantage.

A mysterious figure grants Shinji Ikari a fresh start. Armed with new resolve, Shinji seeks to build a better life.

It's hot, everyone has left the house, and Shinji has some spare time.

Set in the anime, starting with the end of the Twelfth Angel attack, Shinji, along with NERV, find themselves having to deal with the unexpected, and very unimaginable arrival of a new generation with a tie to the hurtful past. Since there is an infinite number of alternate universes, the same scenario can be visited over and over again, with different results.

En un mundo donde son engañosas las apariencias, termina siendo imposible dar algo por sentado. Porque al final la realidad nunca es como crees y nada resultaba como pensabas

Rei finds Asuka home alone, a plastic guitar in her hands her only company. She doesn't appear to be having fun.

The Hedgehog's Dilemma dictates that despite the intention of a reciprocal relationship, it may not occur for reasons that two individuals cannot avoid. Despite good will, human intimacy cannot occur without substantial mutual harm, and what results is cautious behavior and weak relationships. (Warning: VERY slow fic. Also serious adult themes and lemons. Bondage not in story.)

Fifteen years after Second Impact, Japan faces its deepest conflict. NERV, its newest militaristic organization, drafts young soldiers at the age of 14 to combat the mysterious organization SEELE and their super soldiers; the Angels. Shinji Ikari is taken from his mundane existence back home and is confronted with the horrors of war as he learns to come to terms with his existence.

A story depicting what happened outside the Evas during the time of Two Souls; it outlines how Asuka/Shinji interactions changed under influence of Kyoko and Yui. It happens chronologically during chapters 8. and 9. of Two Souls.