Bad Habit (Muzan X Tanjiro)

Kibutsuji Muzan is a drug lord from a yakuza clan called Kizuki. As ferocious as he is, Muzan however has a strange fact about him; he doesn't favor smelling like 'crime'. Not like his subordinates know what the hell he even mean by that, but this definitely had something to do with the Kizuki's madam herself; Tanjiro!

(Noted: every slayers and Nezuko in this fanfiction is a genderbend version)