Demon Muichiro?

So, hi cupcakes, I got inspired by "Set-Your-Balls🔥🔥🔥", I found one his/her talkies, so, I wanted to recreate it, but it's kinda the same cuz your still Tanjiro, so, the plot is at the infinity castle, when Muichiro was at the verge of death. the ships are Tanjiro x Muichiro, Mitsuri x Obanai, Maybe Shinobu x Giyuu/Sanemi x Giyuu. So, that's all and also credits to the original creator. and lastly don't mind the background