After another normal day of school, Sensei finds himself once again in his office. Having spare time, he begins to reflect on all that's happened to him since he woke up in Kumon-mi, such as seeing the end of the world, learning his real name, and falling in love. He quickly realizes that, throughout all the ups and downs in his constantly changing life, there's always been one companion who's stuck by his side - His beloved office desk.
Just as he confesses his appreciation for his wooden companion, he hears a knock on his door and summons in Wakana. After briefly poking fun at him for being "in love" with his desk, she invites him out into the city on a day trip to a "secret" location. Suspicious of why she needs him specifically, Sensei tries to pry details out of Wakana but she insists the only reason she's inviting him is because she enjoys his company. He struggles to believe this but chooses to go along with her regardless.
Now deep in the urban district of Kumon-mi, Sensei realizes that the aforementioned "secret" location is a familiar bookstore. As Wakana pursues various books on the shelves, he thinks to himself how little he really knows about her. He realizes, though, that at the very least he knows she wants him around, making him hopeful that Wakana was telling the truth about inviting him purely for his company alone. The thought makes him realize how lonely he feels.
When Wakana speaks up, this hope of Sensei's is expelled as she reveals the true reason she dragged him along was to once again try and pry information out of him about the anonymous poet, "The Girl Who Cannot Breathe". He reels in disappointment and discomfort, falling into silence. Sensing him closing off, Wakana tries to reassure Sensei that she's not prying into his life specifically, but doing so out of concern for Ami; Ami's recent victory in the poetry contest displays a style similar to that of a poet whom Wakana knows. This poet, while an artistic genius with evocative language, wrote about disgusting, dangerous things with a self-destructive voice. As such, Wakana's desperately searching for a confirmation connection so she can step in and prevent Ami from following the same path.
Sensei's unconcerned responses to these worries send Wakana into outrage and she berates him for his indifference towards helping, especially when it's obvious he knows something about the mysterious poet. Despite this emotional outburst, Sensei's position doesn't change, and he tells Wakana to drop the issue because he doesn't know anything
Wakana knows he's lying and asks him one final time what his relationship with this poet was. He claims they're not anything anymore, and walks outside.