Sleepy (Y/N) In The Infinity Fortress(KNY x crackhead! Reader)

(Y/N) (L/N), a Princess of one of the most-known royal families in Japan was held hostage by the one and only Muzan Kibutsuji- -but of course, all she wants to do is sleep. ------------------------ First of all, I do NOT own Demon Slayer and Maoujou de Oyasumi- they belong to their rightful owners. This is merely a fa...