Dark Emperor Cavalry: Prevent the Top War at the Beginning

Yusei traveled to the Light Photo Studio in the Imperial Cavalry, obtained the Dark Imperial Cavalry Drive, and awakened the Dark Knight System. As long as you do what you think is just, you can gain knight points. Knight points can be exchanged for abilities in the Kamen Rider world or abilities in the world you are in. After obtaining the system, Yusei opened the door of the photo studio and traveled to the battle atop One Piece. How can this be done in a war? This will kill a lot of people! The best way to stop war is to deal with those who start it. Fight the navy and pirates together! After the War, the Dark Knight's name spread throughout the One Piece world. Sengoku: "Yusei is the most vicious criminal of all time." Whitebeard: "I hope to fight Yusei again to see who is the strongest in the world." Long: "What we have to do is to subvert the world, not destroy it like Yusei did." Doing knightly things by dark means! Yusei: "I'm just a passing Kamen Rider!" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.