In a world where one receives a skill from the heavens at the age of 15, I, Hikaru Matou, was born into a family of sword saints. Since childhood, I was called a prodigy and was expected to become a sword saint. However, during the skill appraisal ceremony, I was granted the [Open] skill, which was considered a useless skill that only 'opens closed things.' This led to disappointment from everyone around me, and I was branded with the stigma of having a useless skill. Meanwhile, my younger brother, Jigeru, manifested the highest-ranking skill, 'Great Sword Saint.' As a result, my father decided to exile me from the family to make Jigeru the next party leader. In despair, I accidentally discovered the true power of this useless skill. I became the only person in the world who could open status, allowing me to freely allocate skill points and choose cheat skills. I could also check the status of monsters and select rare drop items with certainty. As a result, I became the world's strongest adventurer, acquiring both wealth and fame. Meanwhile, my family later realized they had lost an extremely valuable asset and regretted their decision.