Manga Corollary: Trigun Volume 2, Chapters 1, 2 (2nd half), 3 (2nd half)
The shoemaker's wife says that the husband won't respond to her, so you think his heart or something is in the bag. But in the manga, the wife says his head was cut clean off, and his head was in the blood-leaking bag.
The manga introduces a coin gimmick where Legato gives Vash a case full of coin halves, informing him that each of his assassins will be carrying the other half. If the assassin is defeated, Vash gets to collect the half until he has a complete collection.