A bit light on story, but really cute. I liked how the classmates knew about the relationship and didn't treat it as anything odd.
Blackhair gets pouty when shorthair says the MC is cute. http://dynasty-scans.com/chapters/a_mismatched_love#7
Get a feeling that theres something going on between those 2.
(maybe theres another one-shot out there about em?maybe?)
Oh yes I was wondering about them too. Hopefully there will be another one
I don't get the feeling that Chihiro is in love with Aoi, more that she's possessive/jealous and wants to keep Aoi pining for her than let someone else have her.