Re-Tale of a Hero

Once upon a time, in another world, there was a hero named Amane Kaito. He was in middle school when he was transferred away from Earth. While experiencing many encounters and farewells, he protected the world he was teleported to. His achievements were recognized, and he eventually became a noble in a certain country. He was very much active even during his time as a noble, but due to the strong influence that he commanded, he nearly ended up causing a division within the country. Fearing for the worst, he entrusted the rest to his friends before returning to Earth. Three years soon passed by, and he was attending a private high school run by a certain company. Although he got caught up...