To the Abandoned Sacred Beasts Vol. 7 (manga)

"Over and over our bodies were transformed. Back and forth between human and beast... Bodies and spirits alike shattered... Only the ones who retained their human forms and minds until the end were dubbed Incarnates..."

Hank travels back to École, the place where the Incarnates were made, along with Liza and Schaal. There they encounter old phantoms that invite them back into the past...