Well, that was a story.
Could carry on for few more chapters, but it cut short.
The whole misunderstanding was abnormal, but given Igarashi state of mind kinda explainable, she felt abandoned.
Then Shige tag along despite not giving Igarashi any attention prior, she used him as much he did when he knew how fucked up she is, what a pice of shit.
Igarashi depression sunk deeper than ever, having her re-live the moment in the classroom with Kaname, but with total strangers as she had no self esteem and respect to herself as explanation.
Kaname should at least vent his anger on Shige punching him, who practically admitted he had a no actual interest in Igarashi after boneing her, since he rather police take care of Igarashi going missing, instead looking for her like Kaname.
Wish we had more interaction after Igarashi suicide attempt, but it looks like they came together and she's a bit more happy...
I'll give it 8/10 because it should be a longer story.