I loved this manga from the beginning to the bitter end (though I haven't read the last chapters yet ~). If I may say so, rape in the manga world, much less like rape irl, is still artistic. No matter how dirty, horrendous or abnormal it gets, it still feels neat to me. Here, the guy pushed it a little but, as I've read true horror through Berserk (seriously, sometimes I can't help feeling Berserk is too much), this es as something disagreeable, nothing more. Sometimes you need to feel like shit to truly understand what this world is about.
What I want to put to light in this manga is just how strong the bounds between people are, with characters sometimes messed up, sometimes stupid, sometimes cute, annoying, creeping... Just like in Akumetsu, it's obvious the author tries his best to make it, if not realistic, in the most coherent way. Things happen for a reason, there is intellect behind any comportment, even mindless ones.
With this manga, I'm definitely a fan of the Tabata-Yugo-sensei pair. The stories are profound and well-thought in how they are set, the characters' philosophy and way of thinking are perfectly drawn out by an art leaves a strong mark, they are totally worth reading and following.