A Returnee From Another World, In a World with a Dungeon 50 years Later

The world first learned of him during a certain stream. Ryugasaki Tia is a dungeon streamer who can only be described as so-so both as an explorer and streamer. When she encountered a deep-level irregular in the shallow level of the Kyogoku dungeon, a young man easily turned around the situation that nearly put her in a dire situation. He was said to have been transported to another world. He was said to have conquered the dungeon. No one knew how true those words were, but everyone knew his strength, having defeated a deep-level irregular on his own. This is the story of the world on Earth, 50 years after the young man, Suzuki Shohei, went to the other world, as he witnessed it.