AurEtra

AurEtra is the het ship between Auruo Bossard and Petra Ral from the Attack on Titan fandom.

Canon
Auruo and Petra both graduated from the same division, and on their first mission, they had apparently pissed their pants out of fear. The two were later assigned to both be in the Special Operations Squad, both being one of the Scouts with the most Titan kills. Auruo had seemed to develop some sort of attraction towards her, even saying that it's too early for her to act like her wife. Petra, on the other hand is somewhat harsh to him, such as wishing he bit his tongue and die. She noticed how Auruo tried to imitate Levi's behavior, and thinks that he's nothing like him.

After Petra was killed by the Female Titan, Auruo expressed great distress and attempted to avenge her, although he ended up dying.

Fanon
Despite the lack of interactions Auruo and Petra share, AurEtra is rather popular within the AOT fandom, amassing over 300 works on AO3. Despite this, it is greatly rivaled by Rivetra, which, involving Petra clashes with AurEtra.

Fandom
FAN FICTION

Trivia

 * Isayama once described them to be like “an old married couple”.
 * They're often seen in official art together.
 * The Attack on Titan guidebook describes Petra's and Oluo's argument as a "lovers' quarrel."

Conversation in Attack on Titan Handbook

 * Q: You two came to a very shocking end.


 * Oluo: I let that Titan win. You don't seem to understand: beating a Titan isn't necessarily the best way to get noticed.


 * Petra: The Female Titan was a tough enemy, so I can't be surprised at what happened. But if the captain was in that situation...


 * Oluo: Hah. With the right methods, there's nothing I can't defeat—


 * Petra: Hey! Are you trying to imitate the captain yet again?!


 * Oluo: You're the one who followed me, Petra. But don't you think it's a little early to be acting like my wife?