100-nin no Eiyuu o Sodateta Saikyou Yogensha wa, Boukensha ni Natte mo Sekaijuu no Deshi kara Shitawarete Masu

Story:

He has raised a hundred heroes and decides to end the war with the evil god. Ezen just saved the world. He was seriously wounded and goes to the other world in order to get back to normal. In those days, the heroes apply all the skills to make life better. Heroes wrote to the master about their successes, wanting to meet him. Eisen travels around the country in order to see the sights. He decides to go and visit each of them, reading letters.