I feel bad for everyone except Yoru. Why did she even sleep with Sei if she knows how obsessed she is with her? To only go back to her unfaithful husband.
I think if Aya didn't show up, Yoru might've begun to pursue something with Sei. As disturbed Yoru is by Sei's obsession with her, I do think she takes comfort in knowing there's always someone who wants her (that in at least one person's eyes she is their number 1) because all the guys she falls in love with always end up cheating on her.
I think it was very common for Yoru to go running to Sei as a rebound in the past so it's what she's doing here. There's a reason why Sei hasn't been able to let go all these years...I think on some level Sei knows that Yoru still cares for her (or that Yoru is also unhealthily dependant on her as well) so she keeps holding onto the hope that Yoru will come back to her.
Edit: ok yeah rereading the last 2 chapters that is basically what is being implied. Yoru straight up asks Sei what Sei would do if she were to break up with her husband (implying she might be interested in a relationship) and the scene before they graduate with Sei saying she'll always be waiting for Yoru no matter what so Yoru knows she'll always have someone to fall back on when she's hurt.
But if the series is ending soon and Yoru really won't be showing up again, by not giving Aya her contact info, she's finally breaking them out of this toxic cycle (that Sei straight up ranted about in the previous chapter)
last edited at Oct 20, 2020 9:04PM