Saikyou no Maou ni Kitaerareta Yuusha, Isekai Kikansha-tachi no Gakuen de Musou Suru

Kujou Kyouya, a boy who lacked the special ability granted by a goddess, was unable to prevent the world's destruction. At an academy for heroes who had returned from saving various worlds, he was mocked as a "failed hero." After spending 30,000 years training in another world under the demon king Felice, who had annihilated 3,000 worlds, Kyouya emerges as an exceptionally powerful and unique hero. His newfound strength surpasses even the most formidable heroes. His story, of being molded by the most ruthless demon king, begins.

Traduzione in corso — testo originale in inglese.