Munou to Iware Tsuzuketa Madoushi, Jitsu wa Sekai Saikyou Nanoni Yuuhei Sareteita node Jikaku Nashi

A noble's son named Ars was granted a divine ability called "hearing," which initially appeared to only enhance his sense of sound. Because of this seemingly useless gift, he was labeled as inept and confined to a tower protected by a magical seal. During his time in isolation, he discovered he could hear spells cast by mages and divine chants from the heavens, enabling him to master legendary magic. Over time, he became the most powerful figure in the world. After more than a decade of imprisonment, he broke free and ventured into the world to seek out new magic. However, he remains unaware of the full extent of his abilities.