My Adventures in Another World with the Beautiful Girls

This is a chaotic and brutal world, with a setting where anything is possible. The male protagonist is transported by a mysterious force to an underground space 3,000 meters below the surface. Though he's an ordinary person with no special abilities, in this bizarre place where anything is possible, he doesn't need food or water. Trapped in the underground abyss, he has only one goal: to keep climbing upward! He'll overcome every hardship and obstacle, using his own hands and feet to find a path to the future!