"What you're seeing now is Historia's ending in a parallel world. If you want to save her, then do everything you can to make your way to this world's..."
Taking Eren's words as her starting point, Ymir struggles to survive in a world crawling with monsters, trying to prevent Historia's tragic fate and make up for the foolish choice she made on her own, entrusting that girl's future to someone else.
After many adventures, Ymir finally succeeds in freeing Historia from her predetermined fate. But by then, she no longer feels she deserves to stay by that girl's side...
One day...
"Hey, Ymir, do you still mean what you said before?" A blush spread across Historia's cheeks.
"Huh? What are you talking about?" Ymir asked in surprise.
Historia fidgeted shyly, then finally threw herself into Ymir's arms.
"When this battle is over, let's get married..." Her bashful voice drifted out from Ymir's embrace.
Ymir's face turned bright red in an instant.
Reader Advisory:
1. Lots of original headcanons and original characters.
2. The story uses the world of Is It Wrong to Try to Pick Up Girls in a Dungeon?, viewed mainly through the side story Sword Oratoria. It will have little to do with the main story.
3. You can read this even if you haven't read the original.
4. If anything differs from the original, just consider it an original headcanon! (smirk)
Theme: Don't give up too easily. Sometimes your ideals don't have to yield to reality.