Our Last Crusade or the Rise of a New World: Secret File, Vol. 1 (Light Novel)Paperback, 18 July 2023

The first volume is a series of short stories set in the Our Last Crusade universe! Highlights include an anecdote about Nene, Mismis, and Risya having a sleepover in Iska's room, plus the tale of Iska and Alice's first encounter in their younger days.