It turned out okay in the end(well, okay in hentai terms) but I'm not sure I'd classify a girl blackmailing her step dad to rape his daughter and destroy their family in order to get revenge because she blames him for the death of her mother as vanilla. In fact it's actually kind of fucked up.
Of course I think it's more interesting that way!
Base +6, FertyJukli +6, nightflight7 +7, kemono69 +9
I feel like there should be a sequel to this. It is labeled as volume 1 implying that there should be at least one more volume. Plus, the daughter catches the both of them having sex. This first volume appears on DLSite, but there is no second volume listed there unfortunately.