
Wow, that will be hot, I would like very much to see this! ლ(´ڡ`ლ)

I doubt Karino could get hard with the teacher (or I hope so), but who knows - he's twisted (but that would mean his 'taste in man' is getting worse...). I also don't think that it'll be a threesome, because Karino is rather possessive. It'll be possible only if Karino gets mad at Azusa (as a punishment). Anyway, it's still a high probability that Azusa'll get raped by this perverted teacher :/

Karino seemed pretty mad when Aszua set Karino up to look like Karino was cheating, but we'll have to wait and see how it is translated. Personally, I never bought into how a possessive person can punish with group rape instead of something else, but that is neither here nor there. I'll accept it as a kink some people like (which is fine) even if it doesn't make sense to me in terms of plot. It makes sense in terms of fan service, and that's cool.
What strikes me is the way Karino seems to always be aware of the teacher in chapter 10, especially when Karino is talking to Azusa on the roof near the end. Check out the way Karino stares at the teacher (and how Azusa seems unaware the teacher was watching):
http://www.mangago.zone/read-manga/caste_heaven/raw/raw_chapter-10/pg-36/
It's almost as if Karino is staging scenes to break down the teacher's "Lets all be nice to each other" approach. It is as if Karino leads the teacher into seeing the advantages of playing the game. I see a high probability of the teacher raping Azusa. The question in my mind is whether Karino will try to stop it, or if Karino is dangling Azusa as a prize for the teacher to play along.

Well, you might be right. But if that's true, what exactly is Karino's goal? I mean, he treats Azusa as his possession (or private sex slave), so why would he try to focus teacher's attention on Azusa? Especially as he must be aware of the fact that teacher starts to have some perverted ideas. There is a high probability that it's all due to Karino's scheme. Azusa tried to fight him back, and now Karino wants to make him realize, that he can't survive in the game without his help. Probably bringing the teacher into game is a part of this plan. And, as you said, there is a question if Karino will save Azusa or not. There is also another idea, but it's less possible. Maybe Karino noticed that the teacher is looking at Azusa in 'that way' and he's fooling around for purpose, as if he's saying 'look, Azusa is my possession and you have no chance'. One thing is for sure - Azusa is going to be victim again, poor thing :(

You could be right too. I want to believe Karino treats Azusa as his private sex slave, but chapter 8 destroyed that for me (I am sorry for harping on that--I just can't get past it--it's my issue, not yours). I hope you're right. I want Karino to be playing with the teacher in a way that marks Azusa as Karinos.
As long as Azusa keeps fighting, I'll keep waiting to find out what happens next. :)

xD don't worry we all are "traumatized" after chap8...it broke my heart.
Maybe we're getting it the wrong way,usually we say possessive so as to say no one would touch azusa apart from karino. But it seems that karino is much more a psychological manipulator rather than a typical possessive seme,he wants to control azusa's mind(life,thoughts) I guess,which is on another level compared to the others seme. And let's not forget that karino wants to have fun,this thing with azusa is only while he's at school,I really believe that they both aren't aware of their feelings,maybe the teacher will help them understand what they feel? I hope so xD

I think Karino is trying to tame Azusa like kuze did with kusakabe but he has a strong personality and I would like to see someone who is kind or really loves azusa. The teacher said he can save him I'm looking forward to see how he will stand as karino's opponent/rival.

You have a good point about psychological control. Recently, I read something relevant in Ikujinashi No Spectator ( http://www.mangago.zone/read-manga/ikujinashi_no_spectator/)
spoiler for those who have not read it
spoiler
spoiler
The scene where the S seme lets the first MC have the M uke shows how even when the outside guy gets his shot at the uke, it's really all about the seme's connection to the uke. But somehow the connection between the S and the M was clearer to me in that story. I don't know. But it could apply here.
I had this crazy idea....could you imagine Karino doing the teacher and azusa watching?? or doing them both? like saying to the teacher "would you like to join?" Karino could corrupt the teacher like he did with his friend.
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The Fuck is wrong with me?!!!