you were a young boy who just died by celestial dragons cause the celestial dragons are always cruel and arrogant and they never take a shower....but anyways after youre death youre soul didnt go to heaven or hell youre soul turned into a green ghost teenager and when you go back to earth nobody can see you cause youre a ghost except Perona from the thriller bark pirates cause she ate the Horo Horo no Mi so youre now have a life of a green ghost so have fun