I won't rate it, sorry dev but it's worth 2/5 to me. The general idea is kinda nice but the execution sucks. There is no eroticism, sex scenes are just a couple renders and a couple (short) lines, and if we're "lucky" one badly made 1sec loop animation. Writing is not very good, average at best, and average for a porn game is a low bar. Renders are also barely average, some bad and some better.
As I love that kink, the bitch princess corruption route was titillating me, but more for what I could imagine than the actual content.