Author-Chan: So...I've gotten into Demon Slayer, I'm still in the beginning, just met Insokue, and I already love him so much! 

...And I'm already coming up with a new character. 

Dabi: Does she have a name yet? 

Author-Chan: Bold of you to assume it's a lady!...Also no...

Dabi: Once she gets a name, I'll give her a file.

???: WHERE IS HE!? 

Dabi: The hell- Why does she look like Inosuke? 

Author-Chan: Welllll-

???: I'm his twin sister. Now...WHERE'S THE PRETTY BOY?! 

Zenitsu: *hiding behind a tree* Eee....

Dabi: ...So the bore guy has a sister...and she likes the scared boy? 

Author-Chan: Yup...basically...

Inosuke: *appears by Zenitsu* FIGHT ME!! 

Zenitsu: AHH! *runs way, running into the twin sister* 

???: LOVE ME! *goes to grab him* 

Zenitsu: NEZUKO, SAVE ME!! 

Author-Chan: ...This what I imagine at least, so... 

:p