The Heroine's Vacation

Everyone has regrets. and if given the chance, they will do whatever it takes to redeem themselves.

So, when the Cocoon of Finality found a bubble universe with a world matching the Previous Era, what started as a vacation quickly became something much more, and they swore that this time, The Previous Era would actually catch the flames they were chasing for. Because they will not let such a tragic defeat happen again.

OR,

A Honkai fic with Back to the Future shenanigans.

And before you read, here's the obligatory 'English is not my first language' and 'This is my first fanfic' warnings.
Constructive criticism is appreciated (especially in grammar, events, and characterization)

Happy Reading!

(Crossposted on AO3)