Is this only NTR/cuckold content? Or is it possible to avoid that?
Not that I mind it myself, but it's nice to have a means of trying to get a romance path too.
Re: [RPG] The Sword Of Succubus [English] / サキュバスの剣
Spoilers:
Once you're able to massage her in her bed, input the Konami code repeatedly. Well, the directional inputs.