So post-Wano Luffy>Mihawk is already confirmed.
Now its possible that the sword stuck in Elbaf belongs to OG Joy Boy:
Since there are a lot of larping Nika's on Elbaf, its possible the sword belongs to OG Joy Boy......Which means Luffy will use this sword in some arc, and according to certain fans, anybody that holds a sword=swordsman. In other words, Luffy will become WSS confirmed OR Mihawks (and EOS Zoro) title will be confirmed based on skill instead of overall strength.

Now its possible that the sword stuck in Elbaf belongs to OG Joy Boy:

Since there are a lot of larping Nika's on Elbaf, its possible the sword belongs to OG Joy Boy......Which means Luffy will use this sword in some arc, and according to certain fans, anybody that holds a sword=swordsman. In other words, Luffy will become WSS confirmed OR Mihawks (and EOS Zoro) title will be confirmed based on skill instead of overall strength.
