True Catharsis - A Different Trial

Emilia undergoes the last Trial of the Sanctuary. But, when she enters it, she is not confronted with her own future. What she sees is the far-past, present, and possible futures of a certain black-haired and nasty-eyed boy. What happens, when Emilia comes to know absolutely everything about the person that is Natsuki Subaru. And thus, will Subaru finally get his true catharsis?