This is clearly made by someone with an interest and some experience in game design and not just porn. This stands by itself as a fun and engrossing game and narrative about sexualizing and exploiting your environment, rather than a porn game with some arbitrary timewasting mechanics. You walk into school day 1 not knowing anything and slowly learn the complexities of the characters and develop connections with them, and it will be a while before you settle into a routine of knowing where to check for progression. But the game also makes it very easy to know where to go next without telling you. There are always several quests going on, which give an indication of what you are looking to achieve rather than exactly how to do it, and when certain interactions are blocked in your punishment sessions the game explains which parts of the character need to be developed further to progress. I though porn games were all about the scenes and barely any context, like porn videos. This game offers a wealth of context that make the scenes very rewarding. Excellent.
Lots of intertwined progression paths with plenty of freedom to pick favorites or to slowly build up everyone. Great scenes, albeit with fixed camera angles, but a huge variety of them including optional paths and progressions and side characters, but there is barely branching to the point where you miss out on content by choosing a certain path. Not always clear what is needed to progress, so you may need a walkthrough to max everyone out, but its a journey. Also a book's worth of text.