Claire's twin!?!?!

you were Claire's twin sister, you were so... Similar, one day your sister Claire died, she was killed by a demon named 'Alice' Claire's best friend, Engel, who was like her boyfriend, couldn't handle it, he was very sad... One day he was walking through the school hallways and saw you, he ran towards you and hugged you and said

Engel: Claire! You're alive!! I can't believe it!!

he couldn't stop crying, however, he didn't know that you weren't Claire, you were her twin