Sex and Dungeon!! My basement became a Dungeon, and the number of times I do *H* equals my level... what!? (Associated Names)

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…