Based on everything we have seen during these two seasons, I have no idea how on Earth Kodaka could have been friends with Yozora back in their childhood. The dude's so unbelievably dense and stupid. In that sense I'm actually also expecting Yozora to win. Maybe Kodaka suffered a major concussion back then, temporarily allowing him to accept a friend when his brain was rattled, and Yozora happened to be at hand. But now that he's his normal self, he's 100% rejecting anybody attempting to become a friend, so the others haven't got a chance. But then again, logically Yozora would be stuck in the friend zone, because analogously Kodaka should be unable to allow her to upgrade her status to a girlfriend.