Dorse Transformation Singularity (WARNING: Weird/Niche transformation, view at own risk)

So this is almost verbatim the second half of an existing hentai comic with Fate Grand Order characters

https://e-hentai.org/g/3405160/7b8266f191/

and I just decided to remake in AI with my own little flair.

The story is basically this, we see Scáthach wandering around the dungeon as a futanari, incredibly horny and looking for a way to escape when she comes across a sketchy chalice on the ground which she immediately thinks is THE holy grail. She is then overcome with the uncontrollable urge to masturbate and fill the grail with her cum and once she is done, she is turned into an abomination that's basically lust incarnate. Jeanne D'Arc is watching this scene unfold from the shadows and wonders what kind of strong singularity they are trapped in for Scáthach to fall so easily. Whatever it is, she's affected too because she's also a horny futanari and needs to escape before she succumbs to the same fate.