100-nin no Eiyuu wo Sodateta Saikyou Yogensha wa, Boukensha ni Natte mo Sekaijuu no Deshi kara Shitawaretemasu @comic

Eisen, a legendary prophet of unmatched power, dedicated his life to training one hundred heroes capable of defeating an evil god. When the apocalyptic war finally concluded and the world was saved from ruin, Eisen's triumph came at a devastating personal cost. Having sustained grievous injuries while shielding his disciples during the final battle, he chose to retreat to another world, seeking the time and peace necessary to heal his battered body away from the chaos he had helped quell. During his long absence, the hundred heroes he raised used their extraordinary abilities to usher in an era of unprecedented progress and prosperity. Yet, despite their monumental contributions to civilization, they never forgot the master who shaped them into legends. Driven by a deep, enduring admiration for their mentor, they regularly sent detailed letters across dimensions, chronicling their achievements and expressing their heartfelt longing to see him again. Moved by the devotion woven into every page of their correspondence, Eisen resolves to step out of seclusion. Embracing the role of a humble adventurer, he embarks on a leisurely journey across the transformed world. His goal is no longer to fight gods or save nations, but simply to sightsee, travel the land, and personally visit each of the beloved disciples who still revere him as their greatest hero.