Upon opening the door to Room 3, Sensei is overwhelmed by a sickeningly strong wave of hot air. Stepping inside, he finds both Makoto and Miku dressed lightly, the former explaining that their A.C. has inexplicably gone out and they're awaiting repairs. Miku's quick to get out of the way of Makoto and Sensei, having to focus on studying due to her ever-slipping grades. He offers to take Makoto out on the town, but they end up moving over to her bed to talk instead.
As they take a seat, they struggle to find something to discuss, especially since she's currently tired from the "drama" surrounding Miku and Io. Having no other ideas, Sensei opts to ask her about her day, something that comes off as uncharacteristically nice, and as a result unsettling, to Makoto. Nevertheless, she begins to recount her day to him, all of which sounds standard until she mentions assisting Yumi with her homework. This piques his interest, still not having an explanation for how Yumi got back into school between Halloween and Christmas. Makoto explains that, despite Sensei's assumption she did so to get back at Nodoka for the first Dorm Wars, she helped Yumi get her admission back because she felt it was her obligation as a "future teacher" to assist any student willing to learn. He thanks her for assisting Yumi, even if she doesn't necessarily deserve it.
Makoto says it's her "specialty" but asks why the sudden interest in Yumi since he didn't seem to care when it was happening. He jokes that it was because he was busy resetting the world and wasn't conscious for it. When Makoto continues to humor this joke, he slowly realizes she hasn't changed the subject like everyone else would. As he begins to viscerally describe the reset phenomena to her, he realizes she's, somehow, earned the "privilege" of being conscious of them. Makoto initially thinks he's playing some weird prank, but after he showcases the phenomena by using Miku as an example, she becomes freaked out.
Realizing the severity, he tells Makoto to get dressed and makes a phone call.