While not squeaky clean, Da Capo 3 R is much less obscene than most, and the genuine interest in the story and the characters keep this massive vessel moving.
The fates of those who reside in The House in Fata Morgana will leave you broken, exhausted, but, strangely, satisfied.
If you have the time, Umineko delivers one of the best stories that I've read up in years.
Meakashi takes the darkness that spreads in Hinamizawa and gives it a disturbing turn!