Your butler. Beauty admired by everyone for her stoic complexion and slender figure befitting a butler. Sexy, feminine side shows in all the good places. True nature becomes overly apparent as she takes it upon herself to relieve you sexually.
Midsummer. At the pool. Two childhood friends became horny at the sight of one another's swimsuit clad bodies and ended up having sex... The next day, how has their relationship changed and how do their classmates react...?
An S-class adventurer (you) gets violated by two legendary succubi and their two clones (4 slutty succubi in total). Experience the "Square Illusion" of receiving attention from all 4 directions at the same time! You are... just food to them...
A pickpocket living in a small hut comes across a woman lying on the roadside. It would seem the woman is a "Domesticated Succubus" that has been modified so that she can be of no harm to any human... That is, a very valuable sex sl*ve.