@trapsarebetter geez why does everyone always like rushes relationship? Slow, steady, and formed by friendship will create far more stronger bond than a simple friend. Even a relationship made by friendship first can ended in pitiful way.
Besides, Kei just realised it recently. Why would you have to hate him for that? "Be grateful your crush finally realise your feelings! Now make them likes you back!" that's what Asuka doing right now.