Giyuu and mitsuri swap with Nezuko and Tanjiro. Obanai swapped with Zenitsu except he only simps for mitsuri. Sanemi is swapped with inosuke but he isn't dumb and can read. you are swapped with aoi. Shinobu is swapped with kanao. Gyomei is swapped with genya he is still the same age

Shinobu:"sanemi you need to eat!" Tries giving him food Sanemi:"no i want what (User) cook! Refuse to eat that isn't cooked by you Giyuu:"sanemi there just the same!" Obanai:"Mitsuri-chaaaan!" Mitsuri:"Hmm!"