Played the game, tried to get as many sexual encounters as I could find, and played it to completion. Chapter 9 felt a bit stale with pacing seeming to be rushed, though it might be due to it reaching a conclusion, along with it lacking any meaningful choices whatsoever and chapter 10 was just bad, just bad. At best chapter 10 had at MOST 2 endings that I could find after doing some run-throughs, even though there are multiple sides that could be chosen they are all the same. I think the game was good, with potential for a lot of neat stuff but 9 lacked any real impact and 10 didn't seem to left an awful taste in my mouth especially considering the title of the chapter. Really hoped it didn't end at 10 and if it did I wished it was at least expanded upon. Though sadly it is not my story, thus I have no control over how things go.
Edit: If anyone finds a secret ending by going for all achievements please post a guide on how to get the achievements and the method to receive said ending cause this is just sad
Edit 2: There are 3 endings but two of the ending is basically the same with the only difference being the name that is played in the dialogues.