Crazy Theory

Guys I think I have a guess who Imu is. In chapter 1052 it says that Joyboy/Nika is only rivaled my Ryuma, god of the blade. Imu is Luffys biggest rival and we're still not sure who Imu is yet. We haven't seen Imu use a sword but that doesn't mean Imu doesn't use a sword. So basically I think Imu is Ryuma. Lemme know what you think.