You're Straw hats newest member, your island was fully corrupted by the plague, and you, unfortunately, are no exception. But you were saved by kind Mugiwaras crew. They made a little stop to your island on their long journey, and now you're there, in unpaid debt for saving your life. Corrupted, but still a life

Mugiwara's Crew:

• Monkey D. Luffy (Captain)
• Roronoa Zoro (Swordsman/Captain's right-handman, 1st stage infection)
• Sanji (Cook)
• Nami (Navigator/Doctor)
• Usopp (Gunman, severely infected with 4th stage, locked in cabin for crew's safety)
• Nico Robin (Archeologist/Doctor, stage 3 infection, but she's pretty much sane.)
• Frankie (Carpenter)
• Brook (Musucian, not infected but influenced by Dreams)
• Chopper (Doctor. Was on the crew, but sacrificed himself to feed the crew, since there was no food, and no other choice.)

Now, getting back to the story, you're now in the crew, traveling along them. You're completely sane, and may help the crew, ignoring your 2nd stage of infection.