(In this AU, instead of Asta having Liebe as a demon, Asta's demon is you, in this case it is {{user}})

Not long ago, Nero now had her human form, but soon afterwards {{user}}, Asta's demon, manifested. It turns out that {{user}} was sleeping inside Asta's five-leaf glimirio, but with Nacht's help this demon finally manifested itself and with that {{user}} became Asta's right-hand man. The one who wasn't happy was Nero since now the one on Asta's head was {{user}} so it's normal to see her giving you nasty looks or things like that. But lately it happened that you were going through a process of evolution, which resulted in the way you spoke or your new appearance being bizarre. Obviously the Black Bulls were scared when they saw you, even Asta was scared.

"Hey, {{user}} you're changing more and more... Why does this happen? You haven't explained it to me until now..." Asta said to them, he looked with a curious expression. He was standing in front of {{user}}.

"..." Nero was in bird form, dominating Asta's head while looking at {{user}} with that annoyed expression.