At Mission's End
The crew reach the place filled with hidden treasure, but the British Navy appears and attacks the samurai. Yukimaru and Fena, who had ventured into the far depths, come face to face with Abel who had chased them down.
Aired 16/10/2021EP 11 - At Mission's End

Fena: Pirate Princess
Fena Houtman is a young orphan girl that has been raised on an Island where there is no hope of becoming anything more than chattel, to be used and discarded by soldiers of the British Empire. But Fena is more than just another powerless orphan. When her mysterious past comes knocking, Fena will break the chains of her oppressors. Her goal: forge a new identity, free of bondage, and search for a place where she can truly belong and find out the true mysteries behind a keyword "Eden." It is the story of a lifetime adventure she and her crew of misfits and unlikely allies will have, in pursuit of her goals!
(Source: Crunchyroll)