Well, it's it's not exactly a translation problem as an English localisation problem, but there's a term in Japanese called 剣の腹 (belly of the sword) which refers to the flat(?) part of the sword. There's a joke in this novel I'm TLing about it being a part of the body and thus the sword having a body or something. Anyhow, does anyone know any sword terms that allude to parts of the body (the heart is already a part of the joke so that won't do)?
Not about body but I remember a joke that say something about "The Butt of Jokes" after sticking it up you can guess where.
剣の腹 could also mean Sword flank (the side of the sword perhaps?) Sword willpower Sword's heart (probably means the way of the sword) Spirit of the sword