Saishoukan Sareta Yuusha wa Ippanjin to shite Ikiteiku?

A Hero who was summoned to a different world and led the world to peace “Souta Konoe” at that time was a third year junior high school student. However, at the moment of subjugation of the demon king, he was subjected to repatriation magic, he was returned to the earth without knowing anything. He lost his memories when he was repatriated, and the memory of the fight with the demon king was also ambiguous. Source: MU