>>91234890Without someone around to help you stop the bleeding, it definitely would. He did keep it in intentionally when he fell into the river, possibly to let things internally scab over until he could pull it out later. I don't know if that would actually help irl and obviously artistic license and all that. I've heard one should keep whatever has stabbed them in place until they see a doctor; pulling it out immediately will cause a bleed out.
tl;dr: If someone stabs you, go to the ER. You are not an immortal time-traveling samurai and you need immediate medical help.
