Pretty good start so far, the story is shaping up to be interesting though it's pretty early to tell it has me intrigued.
There are a couple of typos otherwise the english is excellent.
The plot sounds interesting, you managed to introduce the cast and many of the LIs are unique so far from what little i could tell, and the experiment gone wrong and how the MC handeled looked realistic, not so much on Marianne's part but it could be explained further so i'm not judging on that. so good job so far.
My only concern so far is that there is a huge cast and alot of LIs and i mean alot, so it will be a huge undertaking especially if there isn't a harem and you are crtafting different paths for each of them, especially if there is also a corruption/Love routes (unless most are just side girls).
All in all a perfect first release and i can't wait for more, good luck dev.