Guys, let me bring some clarity to the above posts.
Unfortunately when installing a new ssd disk, I lost all data, including all files about BBP 0.4. I managed to make Lisa as similar as possible to what she was in 0.4 (I made her more juicy on purpose). As for the rest of the characters, they are new. That answers the question why I couldn't continue with 0.4 - it weighed under 3 gigs, it would have taken a long time before I would have fixed everything the way I wanted. I, roughly speaking, started with a clean slate, but with an old idea in the plot. You say Lisa used to be better because of her background, so wait about two weeks and in this version I'll make that character come alive. The 0.5 story itself has only just begun, there will be more to come.
You're right that the game has become sandbox-like - it is, because I like it that way and I think it's more convenient.
And NTR... guys I don't know what is unclear, you have chosen one of the options, if you choose NTR - you will have random events (so far I think so). If you didn't choose NTR, you won't have these events(and they won't happen in the backgroud). There is no NTR content in version 0.5, but I think it will be in the next version.
You can blame me for losing all the data, but... Yeah, the old version had some plot, but wait, this version just came out. To me the old version was too wrong in the code itself I was inexperienced back then. Starting from different bugs to not playing webm files correctly.
I wanted to improve the game.