深淵の魔術師~反逆者として幽閉された俺は不死の体と最強の力を手に入れ冒険者として成り上がる~

A magician will bring justice to this rotten world! Wim Abel, the court magician of the Cyrus Empire, is falsely accused of treason by the noblemen who fear his great power, and is imprisoned in a dungeon with a barrier that makes it impossible for him to escape. However, Wim, who has enough power to frighten an entire country, successfully escapes from the supposedly impregnable dungeon. He goes to the Kingdom of Leoria, which is said to be a “complete meritocracy.” …And speaking of the Cyrus Empire that banished Wim—-? (Source: Nico Nico Seiga, translated)