Kind of a side story or semi-sequel to this gallery: https://e-hentai.org/g/387184/170dca418b/

In the original story some mad scientist uses vampire's blood to turn himself into a succubus, but it's not just a regular immorality formula he made and he discovers too late that it's actually a virus that can be transmitted through intercourse. This story apparently covers the outbreak he caused. So basically a Girl Flu.

More Gender Bender

Looking forward for more

Base +5, melekain +7

@KamikazeShooter

Unfortunately it's kinda old. I don't think the artist is going to come back to it any time soon.

Base +22, zzl4100598 +19

hope that there is more as this does look good to me,

Base +4