Avoiding spoilers, but Brooke's night job actually is hugely involved with the main biotech storyline. I can't say more, but there is specific reason for her second career. I didn't just do it for shock value. Chapter Three will be very revealing, and you will see a new Brooke and she will change A LOT. Just like Isabella is clearly changing. I like dynamic characters. But again, I also totally agree with being protective of your love interests. Just stay tuned and I think you will like where this is going....
One other thing to keep in mind is unlike other VN's, these characters are not spring chickens. Isabella was a University professor and started this biotech company 10 years ago, so she is at least 36. (likely older). So her, with her looks, at her age, still being a virgin? Impossible. Most VN's feature a MC that is somewhere between 18-22. Not here. So they do have history. Emily is 23 and Brooke is 28, but the rest are all 30's or older. So yeah, some history. But also room for discovery and change.
I have tried to put a lot of heart into my game, and I hope the audience can see that.