Seriously I don't have an idea where that high ratings came from. I wasn't able to finish this. 10 points? for what? It's not half as good as Saezuru Tori wa Habatakanai or Nights or Ze.
This is a terrible cliché - siblings died in car accident, parent's suicide, high society gay guy, abuse, prostitution, rich&rotten parents, rebellious teenager yearning for love, taking the wrong path of life... I like smut yaoi and twisted characters but this time it's like mangaka haven't had an idea for storyline so he got together all overused cliché motives and put them in one story.
I was annoyed by sluggishly going storyline. Dialogues are too long and messy, sometimes it was boring so (for the first time) I started to exclude some dialogues for sake to finish this manga. Moreover the drawings aren't even pretty. They aren't particularly ugly but... oh well maybe they are, like in American comic books in early 80' (Superman Spiderman sth like that). But of course there might be some fans of this kind of art. Definitely not in my liking.
But the worst thing is that the plot is so unreal messed up and twisted that I thought it's a parody of some yaoi. Their reactions & answers often are unconnected with previous questions and doings like characters don't even bother to listen to each other or are simply dumb (or both). Their reactions are also unreasonable or ridiculous
(there's insane guy Adler well known by a doctor, every normal man, especially doctor would took him to the hospital for a long treatment and call the police after what he did but it never happened! - he undressed his own son, gave him a grope, he was trying to rape him and to kill him and after all he tried to commit suicide also he was trying to kill the doc and there were more stuff like that - no police, no treatment, no medicines
gimme a break! it would never happen in reality, the plot is lacking of common sense).
The foreign names of the characters are just wrong for example half Japanese half French guy is called Michail - Russian name - isn't it ridiculous? they're French people with English names (except Christoph Adler I think) Everybody knows that French dislike English, and would never give them English names - next one mistake but it's not that important after all. Did I already told that the storyline is poor? Like in old low budget horror movies. What's more there's almost no sex scenes... what a pity. Honestly I'm disappointed, this story is shitty.
update: I've finished this manga. Well I admit there were some nice pictures while they had sex (finally! in the end of vol2) but still I hate when plot is twisted to the extent when manga is as much pathetic as it is funny. I'm truly surprised that so many people with a nice taste liked this crap.