Shiroe and his friends have come to the Depths of Palm to reach the Sacrifice Clan's gold.  The underground labyrinth is filled with powerful monsters that wear them down in a war of attrition.  Meanwhile, Akihabara, Akatsuki hears about the "Teachings".  She's very interested to know that by completing a high level raid, she can greatly improve the level of her techniques.
with each more powerful than the last.
Je höher der Rang ist,
desto stärker ist die Technik.
à savoir « novice », « confirmée »,
puis « secrète », et enfin « arcane ».
e ognuno è più forte del precedente.
С ростом ранга усиливается 
и эффект от умения.