The Reincarnation of the Forbidden Archmage

In The Reincarnation of the Forbidden Archmage, the protagonist Saeki lives in a world where dungeons have suddenly appeared, and humans with special skills attempt to conquer them for wealth and glory. Despite being labeled incompetent for his lack of skills, Saeki becomes an adventurer to earn enough money for his sister’s treatment. Unknown to others, Saeki is actually the reincarnation of the most powerful archmage, a secret he keeps hidden while gradually regaining his immense powers. With his unmatched magical prowess from a past life, he sets out to prove his worth and save his sister, overcoming numerous dangerous foes and challenges along the way.