I don't usually play NTR games, but Avantgarde has always been top tier and this was actually a pretty nice story, though like others I wish there was an option to have romanced Hannah instead. Hell, I would even take Elena 'cause she pretty much ends up doing a reverse of Amelia, getting less slutty with every loop as she develops tsundere feelings towards the MC... Shame.
I really just ended up disliking Amelia with every loop. The first go around was rape and the second gangrape, but the three loops afterwards were more dubious to straight-up consensual as Amelia slutted around while Masamune did the bulk of the legwork for the investigation. I know its her whole 'fall to corruption' thing but it really just got annoying after a time and there was no real emotional connection to tug on. Hell, I got more upset watching the Olivia scenes than the Amelia ones (though that's mostly the implication that her naughty vids are being sold - Damn it Jackson! You have the childhood friend route going, just be content with that!). All in all, great story though it really would've been nice to have a choice in the true end to stop Hannah from going through with it and starting the romance with her.