The entrance ceremony for Raira Academy. The students' varied mix of emotions swell. As they prepare for the new journey that lays before them, some meekly introduce themselves. One says he's quitting school even though they've just begun. A seat where he should be sitting sits empty. Amidst all this, Kamichika Rio is there. A girl with a dark side to her. A crack suddenly opens atop this otherwise normal world. The girl who spots this should have died two days prior.