Volume 9: Phantom of the Ancient Castle, Chapter 5: Rebirth Part 2
If it hadn't been for the brilliant performance of this captive Light Mage against the One-spiked Flying Dragon, it would be quite uncertain whether this adventure group could have made it through that challenge unscathed.
Fortunately, the gains they had made were not insignificant, especially the large number of books related to magic acquired from the two bookcases, which Komer and the other Mages were eager to return to the surface to peruse at leisure and digest the fruits of their adventure.