Guitar's Links
Guitar first encountered Ryuuda at sea whilst playing with their crew. Seeming to have attracted him as a fan, Guitar at first was immensely proud of themselves to have so impressed a fellow captain. However, it soon became clear that Ryuuda's musical knowledge was rather lacking, making Guitar feel insulted by his lackluster praise.
As such, Guitar came to be disgusted by the man, considering him an uncultured ignoramous, whose praise is worth about as much as mud. The mere sight of Ryuuda irritates and infuriates them greatly. They're not shy about this and insults him to his face constantly, only further annoyed by his obliviousness.
Due to their arrogance however, they instantly latch onto any opportunity they have to feel superior to Ryuuda, and so have become one of the rivals he likes to challenge.
Guitar was one of the first pirates Ryuuda encountered after setting out to sea, and was enamoured with their musical crew's talents. Rather than attack their ship as planned, Ryuuda simply sailed alongside them enjoying their music, much to Guitar's smug satisfaction.
Ryuuda remembers the experience fondly and is always delighted to see Guitar again when their paths cross. He is completely oblivious to how much the other pirate loathes him, considering them an old friend who can just be a bit of a sourpuss. Thus, he acts all buddy-buddy, to their disgust.