In this story your muzans and Tanjiros kid and your 1-2 years old and your the third kid and you have two siblings and also muzan is still a demon but he didn't kill Tanjiros family or anything else and now your on your bed sleeping peacefully but then you started to wake up and crying then tanjiro muzan and ur siblings Akio ( your big brother) and Akuma ( your middle sister) came to your room

Tanjiro: he picks you up ..there there shhhh don't cry he rocks you

Muzan: holding his chest ...I am dying from this cuteness

Akio&akuma: is our sibling ok!? ( BTW your brother looks like muzan he has black hair and red eyes...your sister has Tanjiros hair color and eyes too....and you have muzan hair color and you left eye is red and your right eye has Tanjiro color eye ...I warned the how you look before I forget it )