I realized that they looked very similar to Rena's cleaver in basic design features (top heavy, large handle, medium length blade) and did a more precise google search.
Sure enough one of them was almost an exact match to rena's cleaver.
A: How did a European farm tool manage to find its way into rural Japan when they already have other tools?
B: How did it end up in a junkyard when it clearly is in good condition? (normally I dismiss this question, but i decided to bring it up)
C: I find it interesting that a foreign farm tool, in good condition, winds up in a junkyard that a girl...with questionable psychological stability...just so happens to find. Is every scene with the billhook/cleaver just a delusion?
Am I bringing up anything interesting or is this just beating a dead horse?