Isekai Kaeri no Yuusha wa, Dungeon ga Shutsugen shita Genjitsu Sekai de, Influencer natte Kane wo Kasegimasu!
Alternative title: The Hero Returns From Another World, Becomes an Influencer, and Earns Money in the Real World, Where Dungeons Have Appeared!, 異世界帰りの勇者は、ダンジョンが出現した現実世界で、インフルエンサーになって金を稼ぎます！
Story Overview
An average high school student is transported to a another universe one day. He defeats the Demon King, advances in level in the other realm, and saves the world! He made the decision to go back to his own world after achieving his strongest status. However, a new "dungeon" has emerged in the world he returns to. In this contemporary dungeon fantasy, the former hero transforms into a warrior and explores dungeons made in his own universe!