I'm glad for this update.
Yamada's relationship with sensei is not meant to be realistic, then again every person who screams realism makes the dangerous assumption that they've talked to every cannibal, scat-lover and all manners of weirdly wired people around the globe. Yamada was never shown to be the standard high school girl, and sensei isn't exactly a standard teacher either.
What matters is that they have a unique dynamic. Especially one that
doesn't result in a romantic relationship. And it's not like the manga is being secretive with the character's intentions.
To her, he's just a wounded beast. That made him love her, but it's made clear that that was his fault and misunderstanding.
I'm excited to see where this will go.
@trapsarebetter that was the setup for him to misunderstand. In hindsight, she was worried he was misunderstanding her intentions. Notice she didn't press the matter further when he stated he "only saw her as a student".
@justforthelulz everytime the lesbian couple is mentioned it seems to be for comedy's sake. "Those loud bitches". But tags wise I'd say there's more setup for tragedy here than anything else.