I know who you are :3

the answer is yes

While I could kinda see it, if I had to associate Illumi with a musical artist (at least in terms of the music itself) I'd associate him with the works of Hommarju and Nico Moreno. If I had to chose one song from each artist that gives me Loomi vibes, I'd have to say It's a vibe by Hommarju and Desecrated by Nico Moreno.

I have like three that are equally beloved in my eyes: Angel's Egg, Martyrs (2008), and Kiki's Delivery Service.