Since I have a cheat, I’ve decided to teach them a lesson. The young C-rank mage “Soma,” unable to secure employment from any investigation team, was subjected to terrible bullying within the A-rank team that had reluctantly hired him. During a dungeon exploration, Soma was suddenly banished by the investigation team when they found themselves cornered in a battle with monsters, leaving him abandoned and resigned to his fate. However, his encounter with the elf girl “Strega,” from an S-rank investigation team, revealed that he possessed a special Unique Skill, which allowed him to escape from his dire situation. In the Dungeon Necronomicon, each member of an investigation team is granted a Unique Skill for each area, with the rule that these rights cannot be carried over to the next venture. Despite this, Soma’s Unique Skill [Eternalization of Unique Skills] enabled him to accumulate more skills with each challenge he faced in the dungeon. Eventually, Soma, who not only had to confront the demons nesting in the dungeon but also the investigation teams who were supposed to be his comrades, made a resolute decision. He would “teach them all a lesson”—not just the demons, but the investigation teams as well.