Yuri Project
joined Jul 14, 2016
I'm guessing the mother either is sitting in that room, a complete wretch, or has killed herself. From Asahi's memories, it's clear she was still alive after Shio went missing. it's entirely possible that she and Satou never even met.
Also, Shio's memories of her mother seem to indicate that the woman had completely lost it after running away from her husband. She was overly controlling, desperately trying to keep Shio from leaving their apartment. Perhaps this was out of fear of being discovered by her abusive husband, or maybe guilt over leaving Asahi behind. Whatever the reason, her own child lived in terror of her. It could be that Shio's fragmented memories selectively consist of all the bad things, but still, she definitely underwent some severe trauma at the hands of her mother.
It seems pretty clear that the life Asahi had imagined, the dream that kept him going through all the misery and abuse, had never existed in the first place.