YES YES, I agree with you !!! On the other hand, I do not know if we can blame them for their behavior towards him. In a sense, it's to protect a dear friend to their hearts! ╥﹏╥
I see some people blaming and raging Ryan, but i personally cannot blame him. His overprotectiveness is justified, if Kyon rages and 'betrayed' Lucaon there are 95% he will broke down and become a full zero. Ryan was supportive of their relationship by teasing and showing Lucaon some intense jealously which get him questioning about the nature of Kyon in his heart. He might annoyed the fuck out of people with the way he treats Lucaon but that just him staying true to his character. Straightforward and cunning.
One part of me wants Kyon to stay, but the other part of me wants him to go. He's obviously putting Lucaon in danger (Ryan and Cecilia (?) are being total assholes about it though holy crap), but Lucaon has finally realized his feelings for Kyon...tearing up so badly TT^TT
Then, there's the part of Lucaon's parents...it was mentioned, maybe if he didn't save Kyon, his parent's would live. How would Kyon feel, knowing that he might've been the reason Lucaon's parents died??
Ran/ Rain though...I wish she'd tell Lucaon or Sihan about Ryan wanting to kill Kyon from the very begining but her loyalties lie with Ryan and Cecilia, so that would probably never happen. (/TДT)/