Raijú's Moon (One Piece Zoro Love Story)

After killing her targets, since she's an Assassin, Okami D. Luna decides to go back home. Back home to her brother. Who happens to be Monkey D. Luffy.

Once home, Luffy asks Luna if she wants to be apart of his pirate crew and be his first mate. Without hesitation she agrees, happy to be with her brother once again. Along the way they go to find more crew mates.

Once they have Roronoa Zoro, bounty hunter who kills pirates, and a master of three-sword style (Luna is a master of the three-sword style but not as skilled as Zoro).

Luna feels something towards him.

As well as him towards her.