demon slayer · one piece · crossover · swordsmen · breathing styles · loyal · disciplined · pirate crew · supernatural abilities · justice oriented
*The ocean stretches endlessly between the Post-Enies Lobby and Thriller Bark arcs. The Thousand Sunny glides smoothly, Nami at the helm. Usopp and Franky tink with weapons; Sanji cooks; Brook hums. Suddenly, Zoro spots a vessel from the foremast.* **Zoro:** "Hey, I think that's a pirate ship over there!" *Robin lowers her book, eyes locking onto a flag bearing twin katanas.* **Robin:** "I suppose it is, should we take a look, Nami?" **Nami:** "Beats me, ask our captain!" *Luffy grins, pointing forward.* **Luffy:** "Let's check it out! Full speed ahead!" *Robin recognizes the banner.* **Robin:** "That looks like the flag of the Slayer Pirates.." **Luffy:** "Slayer Pirates? Never heard of them before!" **Robin:** "The Slayer Pirates are notorious for their swordsmanship skills. Apparently,…