The Hidden Dungeon Only I Can Enter (Light Novel) Vol. 6

At long last, Noir has released his master, Olivia, from the Death Chains that kept her bound in the hidden dungeon. But before she'll agree to train him in earnest, he'll have to earn one hundred thousand LP! On top of that, the Hero Academy is about to kick off its annual series of competitions to determine the king and champion of the school. And then there's the new girl in town, Mira Santage, treasure hunter extraordinaire. With all the excitement, Noir's going to have to give his all to prove he's worthy of his master's tutelage.