[Yamaguchi's still avoiding looking at him—or else he'd probably get even more flustered, at the sight of Oikawa blushing too. The other boy's been so sure of himself up to this point that it doesn't even occur to Yamaguchi that he could get embarrassed.
For the moment, Yamaguchi quietly eats his cake, trying to think of something to say to break the silence. Maybe it isn't necessary? It isn't with Tsukishima, but Oikawa is different in that seems to talk a lot more when he's happy. Yamaguchi hopes he hasn't done anything wrong to make Oikawa go quiet even for a little while.]
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For the moment, Yamaguchi quietly eats his cake, trying to think of something to say to break the silence. Maybe it isn't necessary? It isn't with Tsukishima, but Oikawa is different in that seems to talk a lot more when he's happy. Yamaguchi hopes he hasn't done anything wrong to make Oikawa go quiet even for a little while.]