Greek tragedy animes

So I love this genre of anime and I feel it's underrated. The kind of anime that challenges the Shonen concepts of the hero always getting the girl, saving his friends, and defeating this foe with a power not even he knew he had. To see supporting characters/main protagonists die and horrific events that break sanities is powerful. When I get done watching an episode and I sit there silently thinking "holy s*** what did I just watch" I'm impressed. Without giving too much away some animes that I consider to fall into this category would be Soukyo no Fafner and Elfen Lied.