I remember this game, I found it on some obscure part of the internet many years ago. I decided to give it another ago and, unfortunately, it's just as "frustrating" as I recall it. I like the idea behind it but I don't like the execution. Pressing a bunch of buttons and hoping I hit the right combination to unlock items / move the story forward just doesn't do it for me. I like the dedication the dev put into it, in particular the text / scenes for the game, but I found myself losing interest the more I played, mostly due to being stuck a lot of the time and seeing a lot of repeated scenes.
Its a good game, with some decent kinky events, but needs a walkthrough IMO.