Is there ANYONE in this story who doesn't have a repressed crush on Akio??
Also, those who are still talking of the "old" and "new" Shiori even at this stage are missing the point big-time here - it's been the same personality all along, only now she remembers and appreciates what made her act out the way she did before she lost her memories. She started doing so out of spite after Akio rejected her feelings for him. That was when she started being mean to her sister as well. Doesn't rule out the possibility that she might handle things differently this time