Usopp has always been a female but was always mistaken for a very feminine and scared boy. When she joined the Straw hat crew they also assumed she was a male, which backfires when she starts to fall for a certain green headed swordsman. Usopp x zoro fanfic I do not own any of the characters or onepiece all credit goes to eiichiro oda. Also trying to finish and correct this story , I'm very sorry for the slow updates.