Gendai no Saikyou Heishi, Isekai Dungeon o Kouryaku Suru

Hasumi Ryuuji, the man called "the modern era's strongest soldier", someone who can make numerous difficult strategies a success, was transferred during a mission into the depths of another world's dungeon. A "heavenly voice" echoed inside his brain guiding him — "Welcome, the hero from another world" — as he encounters a scene in which adventurers are being attacked by monsters. However, making good use of his superior physical abilities, discernment, and hand-to-hand combat abilities, he succeeds in easily making quick work of the monsters. In this other world, where adventurers are existen