re:Zero Starting Life in Another World, Vol. 6 (light novel)

After suffering terribly at the hands of the Archbishop of Sloth Petelgeuse, Subaru returns to the capital with his ability, Return by Death. Swearing revenge, he'll need to find allies and borrow their strength to strike back the the Witch's Cult and save Emilia. But how will he manage that when he has nothing to offer?