Chef-d'œuvre and/or great plot yaoi

One of the most saddening and heart-breaking story I've ever read, but yet, I deeply like it. The story is so well-made, characters reactions and actions are realistic, even too realistic. It is clearly for me one of the best stories, and omg the author's style and his use of space... Yes, this is high-quality content.
However, if you suffer from post-traumatic syndrome because of sexual abuse, be careful: the depiction of rape and abuse of power is really violent and might uncover memories.