[Kaoru was watching his brother's face closely for every minute expression shift that could clue him in on what Hikaru was thinking - they weren't unhealthily co-dependent on one another for nothing. But even so, Hikaru was going through emotions so rapidly, it made Kaoru a little nervous just trying to keep up, and when he ended off with a joke, of all things, Kaoru was quick to blush, caught off guard.]
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S-Shut up! Haruhi wears glasses too, you know.