Another thing I like about this update is how Rin's involved this time, and no I don't mean being the witness to a fingering scene WE ALSO NEED TO SEE DAMNIT SEL. Rin picking up signs of Sensei dissociating and checking on him to me is very very sweet, and also is a good use of her character; she can care about him in angles others rarely do or are aware of. I seriously thought she would only enter Sensei's picture once again after her eventual breakup, but I am glad that I was wrong.
Though I wonder how Rin would think about Sensei and Sana's recent rapid advancement. Opening ways for her to eventually sleep with him? sure, Rin is degenerate enough. But as someone who has tons of experiences in severe mental breakdowns, will Rin view it as Sana taking advantages of Sensei under his delirious state? Will she equate this to an "if scenario" where Sensei actually became handsy when she flashed him her boobs and bleeding wounds back then?
But I guess even if she really thinks Sana is molesting a mentally incapable person, it's just Rin's dynamic with Sana would change (and it definitely will regardless after this), and Rin's path to succumbing to Sensei is still as scripted as ever.
Also, I am utilizing this post to say FUCK YOU OTOHA for being a shitty girlfriend. This time "she couldn't make it to the party" is her prioritizing seeing Niki over spending time with Rin. This isn't "got caught in the heat of the moment" or "being impulsive" anymore, this is a desperate yet active attempt to hook up with someone else when you're already in a relationship, BAD!
(Niki wasn't even doing idol work this time so excuse is even thinner)