Please understand the following:
From my point of view, the Final Fantasy Universe is already part of Kingdom Hearts, which is why I believe this story doesn't belong to the "crossover" section of Fanfiction.
The introduced character is Lightning (Claire Farron) from Final Fantasy XIII-2, after one of her many attempts to save Valhalla and her failure.
(Constantly Updating the same chapters.)
It's hard to describe your surroundings when everything around is pitch black. Falling deeper into it, Lightning felt how her strength drained the deeper she fell into the darkness.
She didn't mind, this desolated place, which currently had no limits, was peaceful. Did she belong with the darkness, now that she failed to protect one of the many possible futures of her planet's timeline?
It wasn't the first time she failed though, many versions of herself have been victim of the same fate already. But reminiscing on what was at stake and on how many times versions of herself gave up once defeated, this time, she decided to fight the darkness from within. The environment was dark yet visible, maybe there was a limit on how much darkness there was in death, if this was death at all.
Her body gently landed on rock and sand, and with the touch of the ground she opened her eyes. Standing up wasn't easy but she managed.
From where she stood, an endless road stretched in front of her. Even if she didn't want to admit it, her entire body had been worn out, and her clothes were no better with the blessing of the goddess Etro now gone, the only good thing about this is having her old weapon back. Giving off a nostalgic feeling to her.
Maybe this too was a world swallowed by darkness, or maybe it was the origin of all darkness. Figuring out the latter being true took little research, with small manifestation of darkness came out from all around her.
Their numbers were discouraging for the wounded warrior, but if she was going to fight the darkness, she needed to recover her strength back. The little strength she had was used to walk on the path. The creatures were small and slow, so it wasn't much of a concern to be chased by entire flock.
Years, Months, Weeks, Days, Hours, Minutes, Seconds. In darkness there was no such thing as time, just like Valhalla.
With the road changing, the creatures stopped chasing after her. Now, surrounded by all kinds of floating rocks, with sapphire stones shining the road up ahead, everything seemed peaceful. Those precious minutes of peace were essential for her recovery.
What laid now in front was a greater challenge. There were less creatures, but their size doubled or tripled and the same should be said about their strength.
Lightning wasn't going to risk it and having a seemingly more intelligent swarm chasing her, and she had nowhere else to go but through them. It wasn't long before she finally clashed into battle against these unknown beings.
Most of all, this wasn't the place to be resting.