無能と言われ続けた魔導師、実は世界最強なのに幽閉されていたので自覚なし

Born with the “useless” gift of [Hearing]—as declared by the gods—Ars was imprisoned in a tower by his disappointed parents. But one day, he realizes that with his enhanced hearing, he can replicate any magic spell he hears—even legendary incantations wielded by the gods themselves. Before long, Ars unintentionally becomes the most powerful magic user in the world. Finally stepping into the outside world, he begins his journey... But having grown up in isolation, he's completely unaware of how absurdly strong he’s become!? A tale of unwitting OP magic, divine gifts, and a clueless prodigy begins!