Ima, Soko ni Iru Boku, Junketsu no Maria Recommendations
Much like 'Now and Then, Here and There' (NaTHaT), Maria lulls viewers into a false sense of security with a beginning that does not suggest horror and despair. At all. Then, without hesitation after the misdirection, they both proceed to make viewers so uncomfortable with scenes involving death and rape and everything horrible about war that mouths will almost certainly be left open.
Just to be clear, Maria is nowhere near as extreme as NaTHaT. Maria stops right where NaTHaT twists the knife, to be as non-spoilerific vague as I can be. But I could not help but think of NaTHaT during one scene in particular.