I really liked this chapter and—I mean this genuinely as a compliment to the writing—this felt like the clearest depiction so far of Takayanagi straight up abusing the power dynamics between a teacher and his students.
He's not doing it because he's evil, but because his mind is currently really messy from all the grieve he's been experiencing. He's clearly failing to separate his role as a school teacher and his role in his own personal life.
The students can clearly tell that this “debate” on euthanasia doesn't feel like an actual debate at all. To me it seemed clear that they feel like something's wrong, that Takayanagi is grieving over the loss of someone close to him and is using the classroom as a space to process the loss of said someone, consciously or not, and forcing them to participate in that grief.
Splitting them into “for” and “against” side regardless of their actual beliefs only reinforces their gut feeling that this isn’t about learning, it’s about him just needing the discussion to happen in the first place.
The moment he deflects the question with “it’s not about me” on page 17, everyone basically got the confirmation that it IS about him, and the fact that he answers it anyway immediately after makes the contradiction even more telling.
And I'm glad the author made Chono straight up call Takayanagi out on page 25 and 26, about him forcing the debate to happen, that it clearly is about him, and yet refusing to participate. At that point Chono wasn't asking that question as a student asking his teacher, but as a human asking another human being.
Anyways sorry for the messy writeup, I really like this chapter and it's written really well.