It does. As does the character work. It's a competently written story but it's not fantastic.
I'm saying the story can make characters interesting. If you take Emma and you just have a slice of life, where she's sitting in her room chewing gum, that won't give you opportunities for her to shine compared to what she'll do in a stressful situation and it won't give the main character opportunities to be Superman-esque.
It's why guys role their eyes at most rom-com's but they perk up watching Kyle Reese and Sarah Conner form a relationship fighting off a Terminator. The characters are interesting and you get to explore a lot about them because they're put in an interesting situation.
This VN I find an interesting distraction, definitely above most AVN's posted here in quality. I wouldn't put it in my top 10 though. Wait, do I have a top 10? There's a lot of crap on this site...