What would you do if a pair of bloodied, disembodied legs approached you, practically spoke out of their buttocks?

Most people would certainly flee in panic, but Usopp from One Piece realises the legs in issue belong to a friend.Kin'emon, who was assumed to have been killed by the cunning Kaido, is alive and well. Unfortunately, he's still stuck to the floor, or at least part of him is. The second part is with Usopp, giving him directions to Kin'emon and Kikunojo, who are both in critical condition. But how does this happen?

Kin'emon's Legs Raise Some Dark Questions

Kin'emon isn't sure how he survived, but he believes it's because of Trafalgar Law. Back on Punk Hazard, he and Trafalgar got into an argument, and the surgeon split his corpse, scattering the many parts over the island. Kin'emon believes that his torso was never fully reattached to his waist when he was eventually reconstructed. This is what rescued him later on when Kaido pierced him with his own sword.

Despite being played for laughs, One Piece's imagery here is rather dark. What about Kin'emon's internal organs? Are they just flopping about while the legs run, or are they laying on the floor back with his torso? He's been in other fights since being reassembled, so why didn't he separate before if he wasn't properly attached to his legs? How is Kin'emon controlling the legs and (literally) talking through his rear? Are the legs sentient and able to run around on their own? There are so many questions about how this is actually happening.

Kin'emon may be able to concentrate and control his legs, since he attempted to stand up after realising he had lived, but only half of him moved. He doesn't seem to move his upper body when we see him, therefore it's possible that all of his energy is going towards controlling his legs. But this raises another question: how does he have sensation in his legs if his spine has been severed? Nami indicated their presence by tracing the Crescent Moon of the Rebellion on his legs, but how could Kin'emon's torso sense it if his spine was broken in two?

Of course, Eiichiro Oda can't show all the gruesome details given the manga is published in Shonen Jump, a magazine made for teenagers and kids. Even without being detailed, it's still not something you see too often in media with such a young demographic. Yes, One Piece can be violent given it's a battle manga and violence comes with the territory – people die all the time in this story – but the idea of someone's bloody legs running around the battlefield looking for help is kind of horrifying. Even for One Piece.