So- I was listening to a random black metal band I grabbed off a metal blog I follow. I was actually getting really into them, so I looked them up. There was a series of cute, black-metal themed webcomics a few years back called Belzebubs by a Finnish artist; it turns out, this band I've been digging is the real life music of the fictional band in his comic.

I definitely wouldn't have expected a webcomic's band to be good, but it really is! :). https://belzebubs.com/