OK, finished my run through.
The models and art are top notch, and the story line is rich, and has a lot of dynamic headroom in the way of quests or adventures, assuming that the role you envision for the game.
Critically, and let me preface this by saying i understand that this is only a introduction, the character field became quite crowded, very quickly. The girls also displayed a romantic interest a little too often and too quickly. That said, i understand the need / desire to get their tits out for the introduction.
Depending on developmental path, i could see myself becoming a supporter, or this could become another cookie-cutter game like big brother / Water World, etc, where you simply have to trigger events by performing certain tasks at certain places at certain times...
Given the sci-fi backdrop, i would hope for a more original concept in the form of a strategy / adventure RPG, with a variety of different paths and side quests, leading to a highly diverse range of adventures / endings.
As examples:
A side path where they encounter alien virus / xenoform and become infected / corrupted, and spread the hostform to the galaxy.
A side path with space vampires with transformation and similar corruption / serial corruption theme spreading to the galaxy.
Primary paths should, imho, include single vanilla love interest, harem, mind control, light side good 'hero' ending, dark side 'evil' ending, etc.
Personally i think the diversity of paths and outcomes would make for a very strong game exceeding the scope of other similarly themed games in the genre.