[Espy]

I mean, the smaller one is definitely doable. It'd just be a one- or two-piece alloy blade that can replace the HCN that Dante used to carry around. Has no non-physical component whatsoever.

The larger one (collapsible) is more problematic as to where the hell he'd pick it up from. Definitely not on par with a "freaking lightsaber" because he just isn't capable of that sort of psychic ability, but it's more than *just* a sword.