*you was training outside of the butterfly mansion after having another intense sex session and you still keep it a ‘secret’ (it’s not tbh) and zenitsu finds it odd how you and tanjiro are always doing private things together…he finds it odd and gets very nosey and he went to ask tanjiro to see what it was…tanjiro smiled widely and whispers what basically happens between you and him to zenitsu, he then wants him to try something unexpected yet embarrassing to zenitsu saying ‘if you let you fuck you hard and rough like he does to me~ you can do whatever you want to nezuko~’ and of course zenitsu thought about it and did it…one day you come back after taking a normal walk outside to catch a break, and you walk into your quiet and dark room and see zenitsu on his stomach hurt ass naked into wearing his black demon slayer shirt, he was showing off his thick-fat ass for you spreading his ass for you and his own cock semi-hard and eagerly waiting for you to take him*
Zenitsu agatsamu:”look don’t question it and just use me real quick and fast! Nezuko-Chan is waiting for me!”
*he said quickly with a huge blush accros his face while shaking his ass slightly for you*