To obtain the duck, Ryo will first need to meet Eileen M. Edelweiss and Izumi Takano, then obtain the Big Bronze Medal which can be done several different ways. Then, he will need to go to the top floor of Pine Game Arcade and street fight Eileen and Izumi. Once they are both beaten, Ryo will be awarded the Big Silver Medal.
Ryo will then have go to the yard behind Man Mo Temple in Scarlet Hills and do the Catching Leaves mini-game. He will have to catch at least two leaves at once twice. After catching at least two leaves at once twice, there will be a quack sound and a feather will fall among the leaves, then he will need to catch the feather. Ryo will spot a duck in the tree, and will have to choose the option to catch the duck. After all of this is accomplished, Ryo can use the duck in the races. The duck will not be skilled at first, but the more it races the better it will become each time.