Adventurer Gregor rushes in to battle the great demoness, Lilith, much to the behest of his worried companion. He has no time to waste, wishing to find and save his companions Garsted and Tia from the demoness' horrid clutches! (MTF succubus with breast/ass expansion, subtle mental changes but no identity death, physical changes, some FTF content as well in the latter half, etc)

Now in the body of a sexy, female minotaurus, Gareth can't keep her hands off her new form! Tons of sexy masturbation stuff! Later, Gareth and co are clued in on the parameters of their new trial. Their adventures at the brothel 'Succulence' begin with Gareth sensually starting his transformation into a succubus!

Daphne has a big decision to make.

Now fully trained Daphne returns to the human world to seduce her first soul.

Logan has had powerful mana trapped inside his entire life without realizing it. A surprise visit from a succubus offers him a chance at a new body that will let him use this power. However, he isn't getting a choice in the matter. (Male to female succubus TG TF)

After being fully transformed Daphne begins her training with her fellow succubi.

Damien is seduced and transformed by a demon from Hell. Now he must earn his soul back by working as a succubus at the House of Lust.

This commission, and novel length tale, starts with a young couple and a trip to antique store. From there, a little corruption goes a long way.