
Said Box is in the possession of one of the classroom's students, bequeathed to them, with the promise of the ability to grant any one wish whatsoever, by a mysterious, shadowy, ethereal 'benefactor'. Otonashi's personal crusade is predicated upon her search for a mysterious Box which has transformed their ordinary classroom into a 'Rejecting Classroom' doomed to repeat the same day (March 2nd) for eternity. There's nothing like a unsolicited declaration of war by a beautiful transfer student to throw an average high schooler's life into complete and utter turmoil.
