Honjo Mamori, a peerless beauty, was constantly subjected to lecherous gazes from men and envious stares from women due to her looks.

Men became stalkers one after another, and she suffered brutal bullying from women.

As a result, Mamori developed anthropophobia and embarked on a life of reclusion.

One day, while continuing her secluded life, an incident occurred: a crazy stalker, clutching a kitchen knife, forced his way into her home, the sanctuary of her reclusion.

With her parents murdered by the stalker, and on the verge of being defiled herself, Mamori, after a desperate struggle, killed the stalker.

After such a traumatic experience, Mamori lost consciousness and, upon waking, found herself summoned to another world.

When she awoke, before her lay a small cave and a blue, glowing crystal called a 'Dungeon Core'.

Touching the Dungeon Core, Mamori, who had become a 'Dungeon Master'—a being destined to grow the dungeon—made a firm resolve.

She would build an impregnable grand labyrinth that no one could ever defile, and there, she would perfect her reclusive way of life!

Thus, Mamori grew into the strongest shut-in who mercilessly annihilated intruders daring to enter her dungeon... or rather, the strongest Dungeon Master.

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May 13, 2019: Ranked 2nd in the Daily Fantasy Isekai Reincarnation/Transfer Ranking!

June 3, 2019: Ranked 2nd in the Monthly Fantasy Isekai Reincarnation/Transfer Ranking!

Winner of the 'Special Judge's Award' at the 1st Stardust Novel Grand Prix!

E-book adaptation confirmed!

Thank you!

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Also posted on Kakuyomu and Hameln.