Downer-kei Gamer Otouto ga Nii-san Sukisuki Imouto Succubus ni Naru made - Oneshot

[MangaDex]

 

[Googloo]

well that was a strangely wholesome ending

 

[Googloo]

and that was a strange extra

 

[Revias]

Wot...

 

[smormu]

Why is this even gender swap? It feels like something the author did to tack on an extra tag. It seems really unnecessary, she could have just been a girl who became a succubus and it would have made just as much sense, if not more.