Originally supposed to be a storeroom, one day Saino Sōhei's basement suddenly becomes a grand labyrinth. But this wasn't your average dungeon, rather it was where one could raise their (Love) Level by engaging in lewd acts with girls.

Whenever Sōhei acquires a special item from his quests in the labyrinth, he in turn uses them upon girls he likes. But as he further delves deeper into the dungeon, will his relationships with girls change as well……?

This is the story of a boy exploring dungeons, girls and sex!