Why does anyone collect anything? These weapons must hold some particular appeal for them for whatever reason. Aesthetic, perhaps, or maybe they remind them of their days on the battlefield. We won't know for certain unless we can find the owner and ask them.

[This certainly isn't the strangest collection Vanis has ever seen. Frankly, he'll take weapons over all of the, uh, bones and pinned insects and the other very questionable display pieces in Rosé's room.]