Is it just me or does it seem like if Koto and Erika was planned to be a couple, that they made it too obvious, such that it may seem unlikely that they actually end up together? Like Aya if the final boss for them and it is laid up somewhat clearly for Erika to take the place by Koto's side, but is that really all there is to conquer her past traumas regarding Aya and get with the one she loves?