Sonic The Hedgehog "Future Marked By Destiny"
Nanami Tsukishima's a young high school student, she's always kept to herself, down to earth, serious and determined, but she wasn't like this before.
An event from her frail childhood doomed her to be called "Monster" or "Ghost" by the entire school.
In her family, there was her aunt Lizz, which lost mental sanity long ago, told her about a vision:
"Just like my brother... your grandpa, you will not knowingly travel to another world... just stay away from mirrors."
The girl, knowing about her problems, didn't hear her, but an unexpected event will show her the way to Mobius.