Disclaimer: I do not own Fairy Tail, or any of its associated characters and lore. That right belongs to Hiro Mashima.

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Got to Get Back to the Future

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Wilderness of Ishgar, Earth Land, X300s

After destroying the Eclipse Gate in the year X791, Natsu Dragneel, Sting Eucliffe, Gajeel Redfox, Wendy Marvell, and Rogue Cheney were surprised as well as dismayed to find themselves far into the past alongside a relative of their friend, Lucy Heartfilia, named Anna Heartfilia who explained how the Eclipse Gate was used to send the six of them as well as the five Dragons sealed within their charges to the future in a bid to destroy Acnologia. While Anna was in a position to Magically acclimatize all of them to their newfound time period upon arrival in X777, at the time, she was immediately worried about the Dragon Slayers when they were separated from her and went out to find them before becoming sidetracked by the Space Between Time brought into being by the time travel. After a formal reconciliation, the group of six decided to find some way to wait out the following four hundred years one way or another, so that they could return to their friends in the future. While Anna did bring up a good point of ending Acnologia in the past all things considering, Natsu and the others were reluctant to actually change the future out of concern of erasing their friends from the Fairy Tail, Sabertooth, and beyond from existence, so it was agreed to just find their way back to X791 or so.

It was on their travels that the five Dragon Slayers and their teacher found a lone surviving Dragon that was actually a former Human Queen named Irene Belserion, who Anna recognized as the creator of Dragon Slayer Magic much to the others shock and awe. Feeling bad for Irene's circumstances and needing an ally in the X300s, Natsu and the other Dragon Slayers decided to send some of their own antibodies that kept them from becoming Dragons into Irene which turned her back into her Human form that reminded the five of their future friend, Erza Scarlet, by looks and smell alike. The fact that she was pregnant was also concerning. While Anna tended to a joyfully sobbing Irene, the Dragon Slayers took to a private conversation.

"You guys don't think what I'm thinking, right?" Sting inputted first.

"I'm afraid I can't help but think what you're thinking, Sting." Rogue said gravely.

"But what do we do about what we're thinking?" Wendy asked unsurely.

"If meddling with the past is what I'm thinking what's going on, then I'm afraid thinking won't help at all." Said Gajeel before turning to Natsu. "What do you think?"

Admittedly off track with the way his friends were saying, Natsu finally spoke. "I'm afraid we don't have a lot of options, but to talk to her about Erza."

"How do you know that name?" Irene interjected at last after her crying came to an end. Capturing their attention, she added. "I planned on giving my unborn daughter that name before everything went to hell. It seems too coincidental that you'd know it."

Seeing the implications from the nervous looks on her students' faces, Anna attempted to dissuade. "It would be hard for you to believe anyway, Irene. It's best not to get a headache."

Smiling at Anna's obvious nervousness, Irene then went to Natsu before kissing him on the lips much to everyone's shock before saying. "Try me."

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Thought over this idea recently and it just seemed promising. The title can be considered the inverse of Samurai Jack's theme song, if you want, but depending on how this would be played as a longer story, I can imagine that the time travel would play out either like the former or the Transformers Story of Binaltech. Whichever comes first. I thought about adding Anna to the pairing mix as well, but I didn't have much of an idea of how to regress her in age without doing the same for Natsu and the other Dragon Slayers, so you know.

Just let me know if anyone is inspired.