Reign of the Seven Spellblades, Vol. 5 (light novel) - Bokuto Uno - Bog

Thanks to their tireless study and discipline, Nanao and her friends arestarting to develop a reputation as dependable upperclassmen. Between brawlingwith a griffin in magical biology and learning harsh truths about the Tírand the Gnostics in their new astronomy course, their workload shows no sign ofletting up. Meanwhile, Enrico brings Pete to his laboratory deep in thelabyrinth, with Nanao and Oliver secretly close behind. There, the two friendsstumble upon a horrifying abyss and get a glimpse of the longstanding conflictbetween mages and Gnostics. This may be the perfect opportunity for Oliver tofinally exact his revenge on the mad old man...!