I'm not shocked by the fact they have a boyfriend, i'm shocked they have a boyfriend.
Contradiction I know but if you look at it from my point of view, considering all that's transpired till now. It's a personal shock.
Karen is fairly perverted, at least her level of shame is lower than the standard level is, it's not a bad thing. *smirk*
Who am I kidding, the thought that Karen has a boyfriend makes me laugh :DDDDDD
The way she is, or knowing what I do about her and her personality, it's probably someone with a baby face, or someone exceptionally skillful but with a very friendly and supportive personality.
If Araragi wasn't her bro, she would hump him most likely instead. I really enjoy this show, seeing how siblings are so close without breaching the line but being intensely close to it.
I have to say another thing about Tsukihi though. Another thing that confirms that Tsukihi IS Araragi's sister from birth is the fact that in the OP she is seen with short and long hair. It would be pointless to show that if it wasn't true. You could say that the moment the Phoenix possessed her, she could have cute her hair short, as a symbolic "new start".
Gaaah, I still have OP song ringing in my head ... I love it.