Offing the Offspring: Averted and played straight: Aya's father can't bring himself to kill his own daughter, so he ends up getting killed by his own father.
Past Experience Nightmare: When Aya falls asleep at the Aogiri's house, she dreams about one of her and Aki's past birthday parties... and then she sees her father's death all over again.
Sacred First Kiss: Touya steals Aya's, but for a good reason: he wanted to keep Aya quiet while the men that were after her were searching under the tree where Aya and Touya were hidding.