Saige's Doppelganger (ongoing)

After a recovery from an accident,Saige Crimson, came to Tritogeneia High as a transferee student. People were surprised to see her there, like they saw a ghost. It turns out she looks exactly like a student who died months ago.

is it just a coincidence? What did the past have to do with that? Who's who?

"I'm different from her, I'll do everything to make you wish you were dead." Saige.