Personally i don't like Honey Select based game, but i read the description of the game decide to give it a try and was pleasantly surprised.
The beginning of the game must seems ridiculous and absurd at first look , but then after we meet our employer and get a job, the plot will become really interesting.
First of all, i want to write positives sides of this game.
What i really like in this game is that it provide realistic corruption. The algorithm (pain+shame+pleasure=submission) which our MC discovered, of course may seem debatable , but if you think about it, it might work even in real life, maybe not on all people but on some people for sure. Because this algorithm includes real mechanisms from the basics of psychology, what makes story of the game believable. And is really cool, if you remember that it just a porn game. I really don't like most game of such genre where you get stupid cheating mind control powers or boring blackmail and this game resists these rooted cliches except training idea, I guess.
Characters of the game feels alive, some of them have touching backstory: Excellent student girl who was framed and could not finish school , or girl who haven't enough money for training for olympic game and forced to make photoshot for adult magazine. And after you will hear their story, game will give you morale decisions like make this excellent student girl take nude photos for old perverted math teacher or don't harm girl and solve situation in other ways. I think is also cool that game give you opportunity to solve situations in different ways, i hope dev will continue to make more such decisions in future.
MC grow adult with scientific degree, cunning mind and acceptable level of perversion (He have not nose bleeding after every panties or boobs he'll see, what for me is breath of fresh air)
Game also have really good humor and scenes staging.
Animations some good, some are not. In the beginning most of them not very long and interesting. But in last update dev did decent one, i hope he will improve further with it. Oh and there is non sex animations, like dancing or showering which are really GREAT. I wonder, why dev don't spend such effort on sex scenes?
About cons, i don't see much of them, maybe just lack of sex content for now, there is so much updates already, but not so much of that you want see.