Homeless Tensei: Isekai De Jiyuu Sugiru Majutsu Jisoku Seikatsu

A brief description of the “Homeless Tensei: Isekai De Jiyuu Sugiru Majutsu Jisoku Seikatsu” manga:

Shinichi Tanaka used to be the director of the firm, but now he’s a homeless man who climbs in garbage cans. He is unemployed, with absolutely no money, digging through the garbage to live another day. But what’s that? Are there terrible monsters in a dungeon in Tokyo? Suddenly a homeless man is reborn in a different world and begins another life in a small room in a huge maze in the dungeon. An unusual and vivid adventure of a 56-year-old homeless man who finds himself in a different world.