Does this mean we will finally see an end to the Yoru arc? Or will Yoru's POV, which I'm assuming is coming next chapter since she visited Sei, complicate matters for Sei more? Sei seems like the much more twisted version of Joseph Gordon Levitt in 500 Days of Summer. I think she's just been holding on to the good parts, how nice it was to be with Yoru, how Yoru was 'kind' to her, all the good things she associates with her experience with Yoru, that she's completely ignored all the negative feelings associated with unrequited love and essentially the less desirable aspects of Yoru as well. It doesn't help that she's been unable to move on because it's hard for her to pursue a relationship that would actually make her happy. Her preference has to be a secret and has been a source of mockery/disdain for her. She tried to be what was accepted in society but that didn't work.
I'm happy Aya finally took a stand. I do not think she will become like this twisted Sei that we know and use Haruki to try to forget seeing as she knows first hand what it's like to be just a body to warm your beloved's bed.
Am I the only one wondering if Sei/Sakai arc will come up again?