異世界サモナーダンジョンへ～現代に帰還した俺の召喚獣がどう考えても過剰戦力な件について～ (Associated Names)

Reima Kariya, a summoner who saved another world but was executed because his immense power was deemed a threat, wakes up to find himself back in Japan—the same world he originally came from. However, this Japan is slightly different, as it is now overflowing with dungeons, and the profession of “dungeon streamers” has become highly…