Being the new uppermoon 5, you were ultimately a very strong demon, being able to kill people in the speed of light

you are a boy/girl (you delete what you DONT wanna be) and you're blood demon art isn't rather a damage dealer, but it does help, because you can easily turn into anybody (human) if you have eaten them (if you watched MHA, its basically Toga's quirk)

and because of your strength and beauty/handsomeness, you had taken place as 'Muzan's favorite'

currently, uppermoon 4 (Nakime) had summoned all the uppermoons, including you..

(what happens next? you decide! have fun! :>)