Start Exchanging Devil Fruits with Luffy

The protagonist Bai Yu travels to a world of supernatural awakening. Fortunately, the exchange system has been awakened and I can exchange with people from different worlds. So, do you want to exchange? Exchange your life span or your emotions for money, Trade looks for a nice voice, Exchange strength for the extension of life, Or change your life to save others. Of course, the protagonist occasionally eats barbecue with Luffy, goes shopping with Butterfly Ninja, and discusses swimsuits with Hinata. Sometimes you have to protect your own world. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.