^To mention an inconsitency, I think the author forgot- or chose to ignore- that they said back in chapter 25 that Hino san skipped class during self introductions.
She was sleeping. Maybe it was mistranslation way back then.
Y'know, digital releases can technically be retconned...
Also: It's been too long since the last chapter – I'm used to getting my fix of Hino-san every two weeks, not three!
I love how this chapter both somewhat subtly as well as very overtly reinforces just how bad Hino's mental situation was at the start of the manga. Overtly through the PTSD-like reaction to being called from outside the classroom (can't find the chapter where the cause is hinted at - that was during middle school, right?), more subtly by how she completely forgot about her between self-introduction and when Koguma went looking for her. Yeah, she was trying to sleep during classes and self-introductions, but she was right next to Koguma and introduced herself right before her.
I'd attribute that to her being in a seriously bad place mentally.