"wait, what era is this?" "hm? it's taisho era, dear." "...what?" -- [ demon slayer x modern!reader ] y/n shinazugawa, a girl from modern era suddenly ended up in taisho era, where people suffered in every single corner because of one creature, called demons. knowing what happened to her ancestors, would she risk her life to help them? the decisions is on her hands. -- ⚠️ manga spoilers!! originally @vvennaru_ status : on going