Is there any speculation (or information) on who the girl in Saki's flashbacks are?
The one who's in apparently in a wheelchair, in the flashback that happens on the dock. She's also seen with Saki and Teru in a picture. A childhood friend of the two, probably somehow responsible for the current relationship between Teru and Saki? I think there's also fire shown in the flashback, so something must have gone wrong.
I haven't found any other information about her, is there any out there? If not, any speculation?