In 20XX, mysterious dungeons appeared around the world. Countries immediately mobilized their armies to investigate the interiors.

However, only female soldiers were able to actually step inside.

For some unknown reason, men were unable to enter the dungeons, as they were flung back at the entrance.

Twenty years later, dungeon explorers became the most desired profession for women.

After all, discovering new materials in the dungeons and selling them could lead to untold riches, and the power gained from slaying monsters roaming the dungeons was immense.

The world was inevitably shifting toward a female-dominated society.

Amidst this, Tadahitori, a 16-year-old boy, visited the newly opened Okutama Dungeon entrance as part of a school event.

He was pushed into the dungeon entrance by his bully, Kuroiwa, and—unexpectedly—managed to step inside without being flung back.

Thus began a tumultuous series of events.

The Okutama Dungeon, which had previously rejected any intruders except women, transformed into an abnormal dungeon where even female explorers could not enter.

And when Hitori tried to exit the dungeon, he was flung back to the inside at the entrance, unable to leave.

Left with no choice, Hitori had to spend his time at the relatively safe entrance of the dungeon, surviving with the aid of supplies from the Self-Defense Forces sent by the government. One day, a soldier who had been providing supplies said to him,

“Hey, Hitori, don’t you ever think about seeing what’s inside the dungeon?”

Hitori, upon hearing those words, gradually became interested in exploring the dungeon’s interior and began investigating it alone.

Latest Release