It might be inspired by the ancient weapon Uranus in One Piece. Kaido's display on Onigashima was absolutely phenomenal, and his ideological clash with Luffy was one that fans enjoyed quite a bit.

Even with Kaido out of the picture, the Straw Hat Pirates have their work cut out for them before Luffy can become the king of the pirates. One Piece: Luffy Vs. Kaido in Real Life For those hoping ...

One Piece's fashion ... the help of this attire, Luffy finally looked and felt like a true Pirate King for the first time, which is most likely intentional, seeing as Kaido compares him to Gol ...

With the One ... with Kaido in Wano. With such powers granting the famous Gear 5 form, Luffy shouldn’t have struggled so much in Egghead Island, but he was basically held back by One Piece ...

Luffy, the protagonist of One Piece, is easily among the strongest characters in the series right now. After defeating Kaido in the Wano Country Arc, Luffy went on to become one of the Four ...