Not Another Typical Fantasy-Romance Isekai

"for whatever the morrow may bring on the seas, I can only hope that you will still be next to me."

At the age of twelve, Y/N Merriweather regains memories of her past life and realizes she is the first antagonist of the Otome game "Seaside Love Song". Who, despite being loved by her step father, the governor of Trefolk Island, will not only be relentlessly tormented by her step brothers for the next ten years, but will also be driven out of her home and forced to marry an abusive navy admiral when the heroine of the game returns.
Knowing full well that any isekaied villainess's attempts to avoid her fate only leads to further drama, and an arguably more difficult life that the original, Y/N decides to leave it all behind. Disguised as a boy, she runs away and joins a pirate crew determined to never return to Trefolk Island or her life as a woman. She spends the next ten years fighting and pillaging on the ocean, free as a bird without a single scripted plot event to weigh on her heart.

But when fate and tides contrive to carry her back to her home port of Trefolk Island, will the decade of living as a man be enough to avoid her destiny?