Grisaia no Kajitsu is what I'm playing atm.
Finished Sachi's route and currently in Amane's. I love the dialogue and the superfluous military references, but if I were to be critical
Sachi's route felt too cliche to have much emotional impact.
Edit 1: Finished Yumiko's route.
Didn't like her route, but this is due to my dislike of princess-like characters. The whole evil corporate lineage thing feels too cliche and Yumiko's weak character and abilities don't particularly appeal to me.
Edit 2: Finished Michiru's route, some bumps, but I liked it.
Michiru's self-deprecation hits home hard. As an aside, the whole adopting another personality from a donated organ is a bit new to me, but I'm not so dry that I'd be turned off from it.
3: Finished Amane's route. Honestly, it felt really boring at first, but it simply got better and better the more I read.
This is just a coin flip, but I'd wager Kazuki is still alive and is the genius being held captive in Ichigaya - there's lots of tiny hints.
Big Spoiler:
Yea, just finished Amane's bad route, looks like Kazuki really is still alive.
4: Finished Makina's route. Loved her story the most, even though I prefer the other girls.