>>1930449>>1930457Kirino was 100% dere in the beginning (when they were young), went to high tsun and is on her way back to high dere again. There's quite a bit more than just a 'grain of dere', and Kirino has done plenty of nice things for Kyousuke.
Personally, I don't think there's anything wrong with Kirino's tsuntsun. It's there for a reason, she does apologize for her behaviour later, thanks Kyousuke multiple times, and she does progress to a point where she is the one doing nice things for her brother, not the other way around.
Also, Kyousuke helps Kirino by his own accord, because he thinks that it is his duty as older sibling. Nothing spineless about his behavior. Quite contrary, I think he is awesome for doing all that, even when he doesn't know how much Kirino cares about him.
