[relentlessflame]

Originally Posted by 00-Raiser

Spoiler:

Of course I wouldn't be too harsh on Manami (I suspect she'll become extremely hated soon if she hasn't already) since she was just a kid at the time too. Her reaction is probably what most people would have if some one told them they had feelings for a relative: "It's wrong and you should bury those feelings and tell no one else about them if you know what's good for you!" Whether Manami sabotauged Kirino's image of Kyosuke in order to eliminate a rival or to help Kirino I can't say with this little information.

Spoiler for Volume 11:

Well, if it were just that one thing I might agree, but the events later on in the narrative seem to suggest this wasn't just a one time thing. From what has been said, the reason Kirino came to hate Kyousuke isn't just because of what Manami said in the past, but because of a second incident later where Manami got really mad at Kyousuke and reformed him into the normal guy she wanted him to be. So basically, it's like Manami stole Kirino's brother from her, and Kyousuke went along with it.

Of course, more details need to surface to confirm this reading of events, but that's what I gather from what has been discussed on blogs so far. I'd appreciate any corrections if I've misinterpreted anything.