Not gonna lie, I started a couple digging, and by going to the unknown author's latest comic "Dame Ningen Jan", there's 3 suspects that would obviously be Emo Star's creator: Maou Zenigame ShiroAka & Horobi no Michi. Anyone in the comments, Can you guys give me some hints, & (more) investigation? I'm lazy.

ShiroAka: Now a cosplayer (I think it's not her).

Maou Zenigame: Now has a patreon, who is playing games, & visual novels.

Horobi no Michi: Dosen't have the comic, but is she a Lucky Star fan, or associated with the franchise?