Removing the urusei_yatsura and related tags, this looks just like a normal Setsubun demon.

I disagree. That outfit is, from all appearances, a carbon copy of Lum's.

It's still a setsubun thing, but it goes a little bit farther.

What distinction do you make between this and post #401056 then?

The kanabo is not here in this one (Lum doesn't carry one), and that the specific cut of Mikuru's tiger-print bikini matches Lum's exactly.