Adult

MC died after having sex with his yet to be mother-in-law. And as fate had it he was transmigrated into the world of one piece with The lust system.
    He planned to become royal and have harem. But fate had other plan.
    As he was send to the world he accidentally crushed the Wapol. And munch-munch devil fruit along with system energy got mixed with ship. The system was upgraded to 'The lust system version 2.0'. Now he was connected to ship.
    And lastly the goodness for his shake had slightly changed the world so that could collect his lust energy easily.
    What were the changes? Well... some characters become women. The women are perverts and male have very small sex drive.
    Now let's enjoy the adventure of the MC in the one piece world.