I was actually trying to find this exact thing a few months back! Most of the fics you stumble across are post-revival fluff or AU crossovers, which are fun, but I was craving something that dug into the horror of being a zombie idol before Franchouchou. It’s surprisingly thin on the ground. There’s one I remember called 'Beneath the Mud' over on AO3 that did a pretty chilling job with Lily. Instead of just her tragic kid death, it explored her consciousness trapped in the grave for decades—feeling the roots grow through her, hearing the town change above her, that kind of creeping, lonely horror. It was less about the comedy and more about the existential dread, which I thought was a brave angle.
Another one, 'A Grave of One's Own', focuses on Junko and the psychological fallout of her era. It paints her initial revival not as joyful but as a deep violation, having her 80s morals clash violently with the modern world she’s forced to perform in. The author really ran with the idea that her resistance wasn't just shyness but a form of protest. Most fics don’t linger on the backstory horror for long before shifting to found family, but these few that do treat it like a proper horror premise are worth seeking out. They’re not the most popular, though, so you gotta dig through tags like ‘zombie trauma’ or ‘pre-canon’ to find them. My search left me wishing there was more of this niche.